./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 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/recursive/Primes.c -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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:52:34,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:52:34,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:52:34,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:52:34,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:52:34,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:52:34,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:52:34,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:52:34,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:52:34,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:52:34,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:52:34,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:52:34,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:52:34,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:52:34,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:52:34,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:52:34,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:52:34,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:52:34,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:52:34,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:52:34,686 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:52:34,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:52:34,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:52:34,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:52:34,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:52:34,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:52:34,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:52:34,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:52:34,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:52:34,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:52:34,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:52:34,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:52:34,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:52:34,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:52:34,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:52:34,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:52:34,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:52:34,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:52:34,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:52:34,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:52:34,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:52:34,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:52:34,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 13:52:34,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:52:34,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:52:34,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:52:34,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:52:34,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:52:34,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:52:34,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:52:34,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:52:34,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:52:34,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:52:34,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:52:34,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:52:34,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 13:52:34,744 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 13:52:34,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:52:34,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 13:52:34,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:52:34,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 13:52:34,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:52:34,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:52:34,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:52:34,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:52:34,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:52:34,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:52:34,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 13:52:34,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:52:34,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:52:34,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 13:52:34,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2022-07-14 13:52:34,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:52:35,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:52:35,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:52:35,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:52:35,019 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:52:35,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2022-07-14 13:52:35,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030b24c64/9d16ff3bb84541b388c6bd0f4f60ac8d/FLAG310d680ef [2022-07-14 13:52:35,440 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:52:35,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2022-07-14 13:52:35,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030b24c64/9d16ff3bb84541b388c6bd0f4f60ac8d/FLAG310d680ef [2022-07-14 13:52:35,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030b24c64/9d16ff3bb84541b388c6bd0f4f60ac8d [2022-07-14 13:52:35,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:52:35,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:52:35,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:52:35,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:52:35,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:52:35,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:52:35" (1/1) ... [2022-07-14 13:52:35,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d518587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:35, skipping insertion in model container [2022-07-14 13:52:35,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:52:35" (1/1) ... [2022-07-14 13:52:35,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:52:35,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:52:36,031 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/recursive/Primes.c[2190,2203] [2022-07-14 13:52:36,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:52:36,039 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:52:36,063 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/recursive/Primes.c[2190,2203] [2022-07-14 13:52:36,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:52:36,076 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:52:36,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36 WrapperNode [2022-07-14 13:52:36,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:52:36,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:52:36,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:52:36,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:52:36,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,104 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-07-14 13:52:36,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:52:36,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:52:36,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:52:36,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:52:36,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:52:36,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:52:36,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:52:36,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:52:36,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (1/1) ... [2022-07-14 13:52:36,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:52:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:36,157 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) [2022-07-14 13:52:36,163 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 [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2022-07-14 13:52:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-14 13:52:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2022-07-14 13:52:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 13:52:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:52:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:52:36,239 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:52:36,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:52:36,480 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:52:36,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:52:36,490 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 13:52:36,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:52:36 BoogieIcfgContainer [2022-07-14 13:52:36,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:52:36,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:52:36,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:52:36,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:52:36,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:52:35" (1/3) ... [2022-07-14 13:52:36,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674382e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:52:36, skipping insertion in model container [2022-07-14 13:52:36,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:36" (2/3) ... [2022-07-14 13:52:36,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674382e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:52:36, skipping insertion in model container [2022-07-14 13:52:36,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:52:36" (3/3) ... [2022-07-14 13:52:36,506 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2022-07-14 13:52:36,524 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:52:36,524 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-07-14 13:52:36,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:52:36,576 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@4ce61a5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a00738 [2022-07-14 13:52:36,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-07-14 13:52:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-14 13:52:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 13:52:36,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:36,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 13:52:36,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:36,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2022-07-14 13:52:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:36,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032307101] [2022-07-14 13:52:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:36,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:36,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032307101] [2022-07-14 13:52:36,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032307101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:36,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:36,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:52:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605806263] [2022-07-14 13:52:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:36,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:52:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:52:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:52:36,814 INFO L87 Difference]: Start difference. First operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-07-14 13:52:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:36,874 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2022-07-14 13:52:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:52:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2022-07-14 13:52:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:36,896 INFO L225 Difference]: With dead ends: 89 [2022-07-14 13:52:36,899 INFO L226 Difference]: Without dead ends: 76 [2022-07-14 13:52:36,902 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 [2022-07-14 13:52:36,906 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:36,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 187 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-14 13:52:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-07-14 13:52:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 64 states have internal predecessors, (76), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 13:52:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2022-07-14 13:52:36,961 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2022-07-14 13:52:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:36,961 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2022-07-14 13:52:36,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-07-14 13:52:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2022-07-14 13:52:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:52:36,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:36,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:52:36,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 13:52:36,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2022-07-14 13:52:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804687484] [2022-07-14 13:52:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804687484] [2022-07-14 13:52:37,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804687484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:52:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87066009] [2022-07-14 13:52:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:52:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:52:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:52:37,026 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,055 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-07-14 13:52:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:52:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:52:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,058 INFO L225 Difference]: With dead ends: 76 [2022-07-14 13:52:37,058 INFO L226 Difference]: Without dead ends: 75 [2022-07-14 13:52:37,059 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 [2022-07-14 13:52:37,060 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-14 13:52:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-14 13:52:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 13:52:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-07-14 13:52:37,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2022-07-14 13:52:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,080 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-07-14 13:52:37,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-07-14 13:52:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 13:52:37,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 13:52:37,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1790314255, now seen corresponding path program 1 times [2022-07-14 13:52:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650375746] [2022-07-14 13:52:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650375746] [2022-07-14 13:52:37,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650375746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471946809] [2022-07-14 13:52:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:37,152 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,251 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2022-07-14 13:52:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:52:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 13:52:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,253 INFO L225 Difference]: With dead ends: 139 [2022-07-14 13:52:37,254 INFO L226 Difference]: Without dead ends: 70 [2022-07-14 13:52:37,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:37,256 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 43 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 241 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-14 13:52:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-07-14 13:52:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-14 13:52:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-07-14 13:52:37,266 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 15 [2022-07-14 13:52:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,266 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-07-14 13:52:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-07-14 13:52:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 13:52:37,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 13:52:37,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -334825923, now seen corresponding path program 1 times [2022-07-14 13:52:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312960166] [2022-07-14 13:52:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312960166] [2022-07-14 13:52:37,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312960166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168927538] [2022-07-14 13:52:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:37,340 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,408 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2022-07-14 13:52:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-14 13:52:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,410 INFO L225 Difference]: With dead ends: 145 [2022-07-14 13:52:37,410 INFO L226 Difference]: Without dead ends: 83 [2022-07-14 13:52:37,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:37,412 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 31 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 267 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-14 13:52:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2022-07-14 13:52:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 66 states have internal predecessors, (78), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 13:52:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-07-14 13:52:37,423 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 16 [2022-07-14 13:52:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,423 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-07-14 13:52:37,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2022-07-14 13:52:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-14 13:52:37,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 13:52:37,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash 355054241, now seen corresponding path program 1 times [2022-07-14 13:52:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119711492] [2022-07-14 13:52:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119711492] [2022-07-14 13:52:37,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119711492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:52:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695659489] [2022-07-14 13:52:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:52:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:52:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:37,484 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,581 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2022-07-14 13:52:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:52:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-14 13:52:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,583 INFO L225 Difference]: With dead ends: 107 [2022-07-14 13:52:37,583 INFO L226 Difference]: Without dead ends: 106 [2022-07-14 13:52:37,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:52:37,585 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 310 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-14 13:52:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-14 13:52:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.4) internal successors, (105), 86 states have internal predecessors, (105), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:52:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2022-07-14 13:52:37,596 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 18 [2022-07-14 13:52:37,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,597 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2022-07-14 13:52:37,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2022-07-14 13:52:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-14 13:52:37,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 13:52:37,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1880405543, now seen corresponding path program 1 times [2022-07-14 13:52:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064338508] [2022-07-14 13:52:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064338508] [2022-07-14 13:52:37,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064338508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 13:52:37,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720183733] [2022-07-14 13:52:37,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 13:52:37,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 13:52:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:52:37,675 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,714 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2022-07-14 13:52:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:52:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-14 13:52:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,716 INFO L225 Difference]: With dead ends: 136 [2022-07-14 13:52:37,716 INFO L226 Difference]: Without dead ends: 106 [2022-07-14 13:52:37,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:52:37,718 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 463 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-14 13:52:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-14 13:52:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 86 states have internal predecessors, (103), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:52:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2022-07-14 13:52:37,742 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 19 [2022-07-14 13:52:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,742 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-07-14 13:52:37,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2022-07-14 13:52:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-14 13:52:37,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 13:52:37,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1878220355, now seen corresponding path program 1 times [2022-07-14 13:52:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410504580] [2022-07-14 13:52:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410504580] [2022-07-14 13:52:37,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410504580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:52:37,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777101744] [2022-07-14 13:52:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:52:37,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:52:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:37,815 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,906 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2022-07-14 13:52:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:52:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-14 13:52:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,907 INFO L225 Difference]: With dead ends: 106 [2022-07-14 13:52:37,908 INFO L226 Difference]: Without dead ends: 105 [2022-07-14 13:52:37,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:52:37,909 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 279 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-14 13:52:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-07-14 13:52:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 86 states have internal predecessors, (101), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:52:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2022-07-14 13:52:37,920 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 19 [2022-07-14 13:52:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,920 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2022-07-14 13:52:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2022-07-14 13:52:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 13:52:37,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 13:52:37,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:37,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1361525461, now seen corresponding path program 1 times [2022-07-14 13:52:37,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026813007] [2022-07-14 13:52:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:37,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026813007] [2022-07-14 13:52:37,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026813007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:37,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:37,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779778885] [2022-07-14 13:52:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:37,966 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:38,020 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2022-07-14 13:52:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-14 13:52:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:38,022 INFO L225 Difference]: With dead ends: 143 [2022-07-14 13:52:38,022 INFO L226 Difference]: Without dead ends: 119 [2022-07-14 13:52:38,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:38,023 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 28 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 287 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-14 13:52:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2022-07-14 13:52:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 94 states have internal predecessors, (112), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-14 13:52:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-07-14 13:52:38,033 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 20 [2022-07-14 13:52:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:38,033 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-07-14 13:52:38,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-07-14 13:52:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-14 13:52:38,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:38,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:38,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 13:52:38,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1538837383, now seen corresponding path program 1 times [2022-07-14 13:52:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178627305] [2022-07-14 13:52:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178627305] [2022-07-14 13:52:38,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178627305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:38,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:38,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:38,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97823411] [2022-07-14 13:52:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:38,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:38,074 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:38,145 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2022-07-14 13:52:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:38,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-07-14 13:52:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:38,147 INFO L225 Difference]: With dead ends: 137 [2022-07-14 13:52:38,147 INFO L226 Difference]: Without dead ends: 135 [2022-07-14 13:52:38,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:38,148 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:38,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 258 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-14 13:52:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2022-07-14 13:52:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 106 states have internal predecessors, (130), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-14 13:52:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2022-07-14 13:52:38,158 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 22 [2022-07-14 13:52:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:38,158 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2022-07-14 13:52:38,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2022-07-14 13:52:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-14 13:52:38,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:38,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:38,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 13:52:38,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1613355843, now seen corresponding path program 1 times [2022-07-14 13:52:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:38,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006156115] [2022-07-14 13:52:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:38,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006156115] [2022-07-14 13:52:38,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006156115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:38,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029259068] [2022-07-14 13:52:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:38,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:38,231 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) [2022-07-14 13:52:38,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 13:52:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:52:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:38,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:38,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029259068] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:38,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:38,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2022-07-14 13:52:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462629371] [2022-07-14 13:52:38,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 13:52:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 13:52:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:52:38,665 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:39,218 INFO L93 Difference]: Finished difference Result 276 states and 348 transitions. [2022-07-14 13:52:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 13:52:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-14 13:52:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:39,224 INFO L225 Difference]: With dead ends: 276 [2022-07-14 13:52:39,225 INFO L226 Difference]: Without dead ends: 167 [2022-07-14 13:52:39,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2022-07-14 13:52:39,226 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 272 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:39,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 579 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:52:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-14 13:52:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2022-07-14 13:52:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 126 states have internal predecessors, (155), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-14 13:52:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 190 transitions. [2022-07-14 13:52:39,245 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 190 transitions. Word has length 24 [2022-07-14 13:52:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:39,246 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 190 transitions. [2022-07-14 13:52:39,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 190 transitions. [2022-07-14 13:52:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-14 13:52:39,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:39,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:39,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:39,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 13:52:39,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash 48447777, now seen corresponding path program 1 times [2022-07-14 13:52:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192448874] [2022-07-14 13:52:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:39,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 13:52:39,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:39,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192448874] [2022-07-14 13:52:39,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192448874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:39,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046253785] [2022-07-14 13:52:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:39,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:39,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:39,541 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) [2022-07-14 13:52:39,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 13:52:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:39,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:52:39,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:39,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:52:39,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046253785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:39,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:52:39,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2022-07-14 13:52:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739864842] [2022-07-14 13:52:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:52:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:52:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:39,727 INFO L87 Difference]: Start difference. First operand 154 states and 190 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:39,940 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2022-07-14 13:52:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 13:52:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-14 13:52:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:39,942 INFO L225 Difference]: With dead ends: 256 [2022-07-14 13:52:39,942 INFO L226 Difference]: Without dead ends: 199 [2022-07-14 13:52:39,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:52:39,943 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 61 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:39,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 464 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-14 13:52:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2022-07-14 13:52:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 159 states have internal predecessors, (194), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-14 13:52:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2022-07-14 13:52:39,954 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 26 [2022-07-14 13:52:39,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:39,955 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2022-07-14 13:52:39,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2022-07-14 13:52:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:52:39,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:39,956 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:39,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-14 13:52:40,171 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,SelfDestructingSolverStorable10 [2022-07-14 13:52:40,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:40,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2143137265, now seen corresponding path program 1 times [2022-07-14 13:52:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:40,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119164744] [2022-07-14 13:52:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:40,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119164744] [2022-07-14 13:52:40,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119164744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:40,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:40,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526198632] [2022-07-14 13:52:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:40,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:40,241 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:40,299 INFO L93 Difference]: Finished difference Result 221 states and 274 transitions. [2022-07-14 13:52:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-14 13:52:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:40,303 INFO L225 Difference]: With dead ends: 221 [2022-07-14 13:52:40,304 INFO L226 Difference]: Without dead ends: 219 [2022-07-14 13:52:40,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:52:40,305 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:40,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:40,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-14 13:52:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 210. [2022-07-14 13:52:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 171 states have internal predecessors, (210), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-14 13:52:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 259 transitions. [2022-07-14 13:52:40,320 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 259 transitions. Word has length 27 [2022-07-14 13:52:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:40,322 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 259 transitions. [2022-07-14 13:52:40,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 259 transitions. [2022-07-14 13:52:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 13:52:40,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:40,327 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 13:52:40,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1537468884, now seen corresponding path program 1 times [2022-07-14 13:52:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:40,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463598788] [2022-07-14 13:52:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463598788] [2022-07-14 13:52:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463598788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:40,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635423309] [2022-07-14 13:52:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:40,405 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) [2022-07-14 13:52:40,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 13:52:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:52:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:40,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:40,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635423309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:40,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:40,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-07-14 13:52:40,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470849186] [2022-07-14 13:52:40,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:40,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 13:52:40,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 13:52:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-14 13:52:40,534 INFO L87 Difference]: Start difference. First operand 210 states and 259 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:40,603 INFO L93 Difference]: Finished difference Result 224 states and 274 transitions. [2022-07-14 13:52:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:52:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-14 13:52:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:40,606 INFO L225 Difference]: With dead ends: 224 [2022-07-14 13:52:40,606 INFO L226 Difference]: Without dead ends: 176 [2022-07-14 13:52:40,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:40,608 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 91 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:40,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 351 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-14 13:52:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2022-07-14 13:52:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 135 states have (on average 1.237037037037037) internal successors, (167), 140 states have internal predecessors, (167), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-14 13:52:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2022-07-14 13:52:40,625 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 32 [2022-07-14 13:52:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:40,625 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2022-07-14 13:52:40,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2022-07-14 13:52:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-14 13:52:40,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:40,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:40,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:40,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash -118239160, now seen corresponding path program 1 times [2022-07-14 13:52:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107814337] [2022-07-14 13:52:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:52:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:40,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:40,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107814337] [2022-07-14 13:52:40,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107814337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:40,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118131059] [2022-07-14 13:52:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:40,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:40,912 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) [2022-07-14 13:52:40,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 13:52:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:52:40,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:41,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:41,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118131059] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:41,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:41,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-07-14 13:52:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872718651] [2022-07-14 13:52:41,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:52:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:52:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:41,103 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:41,241 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2022-07-14 13:52:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:52:41,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-07-14 13:52:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:41,245 INFO L225 Difference]: With dead ends: 186 [2022-07-14 13:52:41,245 INFO L226 Difference]: Without dead ends: 174 [2022-07-14 13:52:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-07-14 13:52:41,246 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 657 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-14 13:52:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2022-07-14 13:52:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 140 states have internal predecessors, (166), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-14 13:52:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2022-07-14 13:52:41,258 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 31 [2022-07-14 13:52:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:41,259 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2022-07-14 13:52:41,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2022-07-14 13:52:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 13:52:41,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:41,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:41,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:41,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:41,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 644683350, now seen corresponding path program 1 times [2022-07-14 13:52:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:41,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825828151] [2022-07-14 13:52:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:52:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:41,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:41,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825828151] [2022-07-14 13:52:41,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825828151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:41,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444841687] [2022-07-14 13:52:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:41,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:41,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:41,545 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) [2022-07-14 13:52:41,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 13:52:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:52:41,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:41,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:41,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444841687] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:41,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:41,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-14 13:52:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522449423] [2022-07-14 13:52:41,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:41,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:52:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:52:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:41,690 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:41,752 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2022-07-14 13:52:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:52:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-07-14 13:52:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:41,755 INFO L225 Difference]: With dead ends: 182 [2022-07-14 13:52:41,755 INFO L226 Difference]: Without dead ends: 181 [2022-07-14 13:52:41,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:52:41,757 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 33 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:41,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 516 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-14 13:52:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2022-07-14 13:52:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 144 states have internal predecessors, (171), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-07-14 13:52:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 212 transitions. [2022-07-14 13:52:41,767 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 212 transitions. Word has length 32 [2022-07-14 13:52:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:41,767 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 212 transitions. [2022-07-14 13:52:41,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 212 transitions. [2022-07-14 13:52:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-14 13:52:41,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:41,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:41,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:41,991 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,SelfDestructingSolverStorable14 [2022-07-14 13:52:41,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1489652536, now seen corresponding path program 1 times [2022-07-14 13:52:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:41,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766700326] [2022-07-14 13:52:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:52:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766700326] [2022-07-14 13:52:42,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766700326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512802863] [2022-07-14 13:52:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:42,048 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) [2022-07-14 13:52:42,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 13:52:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:52:42,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512802863] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:42,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:42,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-14 13:52:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92865993] [2022-07-14 13:52:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:42,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:52:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:52:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:42,189 INFO L87 Difference]: Start difference. First operand 178 states and 212 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:42,265 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2022-07-14 13:52:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:52:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2022-07-14 13:52:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:42,267 INFO L225 Difference]: With dead ends: 180 [2022-07-14 13:52:42,267 INFO L226 Difference]: Without dead ends: 175 [2022-07-14 13:52:42,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:52:42,268 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 43 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:42,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 461 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-14 13:52:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2022-07-14 13:52:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 141 states have internal predecessors, (166), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-14 13:52:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2022-07-14 13:52:42,279 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 33 [2022-07-14 13:52:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:42,280 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2022-07-14 13:52:42,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 13:52:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2022-07-14 13:52:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-14 13:52:42,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:42,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:42,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:42,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-14 13:52:42,500 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1385978691, now seen corresponding path program 1 times [2022-07-14 13:52:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:42,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692721321] [2022-07-14 13:52:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692721321] [2022-07-14 13:52:42,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692721321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:42,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342975930] [2022-07-14 13:52:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:42,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:42,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:42,578 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) [2022-07-14 13:52:42,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 13:52:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:42,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 13:52:42,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:42,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342975930] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:42,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:42,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-07-14 13:52:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948094936] [2022-07-14 13:52:42,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:42,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 13:52:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 13:52:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:52:42,872 INFO L87 Difference]: Start difference. First operand 174 states and 206 transitions. Second operand has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:43,169 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2022-07-14 13:52:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 13:52:43,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-14 13:52:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:43,171 INFO L225 Difference]: With dead ends: 299 [2022-07-14 13:52:43,172 INFO L226 Difference]: Without dead ends: 160 [2022-07-14 13:52:43,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:52:43,173 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 133 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:43,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 500 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:52:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-14 13:52:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2022-07-14 13:52:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 123 states have internal predecessors, (140), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2022-07-14 13:52:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2022-07-14 13:52:43,183 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 35 [2022-07-14 13:52:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:43,183 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2022-07-14 13:52:43,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2022-07-14 13:52:43,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 13:52:43,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:43,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:43,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:43,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:43,403 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1095335930, now seen corresponding path program 1 times [2022-07-14 13:52:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926243573] [2022-07-14 13:52:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:43,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:43,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926243573] [2022-07-14 13:52:43,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926243573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42856410] [2022-07-14 13:52:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:43,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:43,446 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) [2022-07-14 13:52:43,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 13:52:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:52:43,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:43,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:43,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42856410] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:43,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:43,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-14 13:52:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507758601] [2022-07-14 13:52:43,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:43,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:52:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:52:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:52:43,521 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:43,605 INFO L93 Difference]: Finished difference Result 291 states and 349 transitions. [2022-07-14 13:52:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:52:43,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-14 13:52:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:43,607 INFO L225 Difference]: With dead ends: 291 [2022-07-14 13:52:43,607 INFO L226 Difference]: Without dead ends: 173 [2022-07-14 13:52:43,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:52:43,608 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 36 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:43,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 378 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-14 13:52:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2022-07-14 13:52:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 132 states have internal predecessors, (151), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-07-14 13:52:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2022-07-14 13:52:43,617 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 38 [2022-07-14 13:52:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:43,618 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2022-07-14 13:52:43,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2022-07-14 13:52:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-14 13:52:43,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:43,618 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:43,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:43,843 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,SelfDestructingSolverStorable17 [2022-07-14 13:52:43,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:43,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash -350622166, now seen corresponding path program 1 times [2022-07-14 13:52:43,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:43,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831598326] [2022-07-14 13:52:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 13:52:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:43,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831598326] [2022-07-14 13:52:43,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831598326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:43,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142445372] [2022-07-14 13:52:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:43,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:43,888 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) [2022-07-14 13:52:43,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 13:52:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:52:43,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:44,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:52:44,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142445372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:44,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:52:44,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2022-07-14 13:52:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459555834] [2022-07-14 13:52:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:52:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:52:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:44,042 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:44,188 INFO L93 Difference]: Finished difference Result 189 states and 218 transitions. [2022-07-14 13:52:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:52:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-07-14 13:52:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:44,190 INFO L225 Difference]: With dead ends: 189 [2022-07-14 13:52:44,190 INFO L226 Difference]: Without dead ends: 188 [2022-07-14 13:52:44,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-14 13:52:44,191 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 88 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:44,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 192 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-14 13:52:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2022-07-14 13:52:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.177304964539007) internal successors, (166), 144 states have internal predecessors, (166), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-14 13:52:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2022-07-14 13:52:44,200 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 40 [2022-07-14 13:52:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:44,201 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2022-07-14 13:52:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2022-07-14 13:52:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-14 13:52:44,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:44,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:44,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:44,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2015614804, now seen corresponding path program 1 times [2022-07-14 13:52:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169359222] [2022-07-14 13:52:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169359222] [2022-07-14 13:52:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169359222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018703655] [2022-07-14 13:52:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:44,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:44,533 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) [2022-07-14 13:52:44,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 13:52:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 13:52:44,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:44,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:52:44,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018703655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:44,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:52:44,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2022-07-14 13:52:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970552636] [2022-07-14 13:52:44,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 13:52:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 13:52:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:52:44,734 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:44,876 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2022-07-14 13:52:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:52:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-14 13:52:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:44,878 INFO L225 Difference]: With dead ends: 185 [2022-07-14 13:52:44,878 INFO L226 Difference]: Without dead ends: 184 [2022-07-14 13:52:44,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:52:44,879 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 74 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:44,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 301 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-14 13:52:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2022-07-14 13:52:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 144 states have internal predecessors, (165), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-14 13:52:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2022-07-14 13:52:44,893 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 41 [2022-07-14 13:52:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:44,893 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2022-07-14 13:52:44,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2022-07-14 13:52:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 13:52:44,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:44,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:44,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:45,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:45,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 287216546, now seen corresponding path program 1 times [2022-07-14 13:52:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:45,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803217734] [2022-07-14 13:52:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:52:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803217734] [2022-07-14 13:52:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803217734] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354231307] [2022-07-14 13:52:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:45,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:45,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:45,198 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) [2022-07-14 13:52:45,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 13:52:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:52:45,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:45,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:45,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354231307] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:45,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:45,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-14 13:52:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568543421] [2022-07-14 13:52:45,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:52:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:52:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:52:45,478 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 13:52:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:45,629 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2022-07-14 13:52:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:52:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 44 [2022-07-14 13:52:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:45,630 INFO L225 Difference]: With dead ends: 193 [2022-07-14 13:52:45,631 INFO L226 Difference]: Without dead ends: 188 [2022-07-14 13:52:45,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:52:45,632 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 81 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:45,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 697 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-14 13:52:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-07-14 13:52:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 152 states have internal predecessors, (173), 20 states have call successors, (20), 13 states have call predecessors, (20), 15 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2022-07-14 13:52:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2022-07-14 13:52:45,642 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 44 [2022-07-14 13:52:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2022-07-14 13:52:45,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 13:52:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2022-07-14 13:52:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 13:52:45,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:45,643 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:45,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-14 13:52:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-14 13:52:45,862 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1599875706, now seen corresponding path program 2 times [2022-07-14 13:52:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434575986] [2022-07-14 13:52:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:45,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:45,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434575986] [2022-07-14 13:52:45,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434575986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:45,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610068238] [2022-07-14 13:52:45,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:52:45,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:45,988 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) [2022-07-14 13:52:45,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 13:52:46,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:52:46,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:46,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 13:52:46,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:46,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:46,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610068238] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:46,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:46,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-07-14 13:52:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146464308] [2022-07-14 13:52:46,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:46,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-14 13:52:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:46,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-14 13:52:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-07-14 13:52:46,497 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:48,906 INFO L93 Difference]: Finished difference Result 323 states and 382 transitions. [2022-07-14 13:52:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-14 13:52:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-14 13:52:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:48,909 INFO L225 Difference]: With dead ends: 323 [2022-07-14 13:52:48,909 INFO L226 Difference]: Without dead ends: 321 [2022-07-14 13:52:48,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1376, Invalid=6280, Unknown=0, NotChecked=0, Total=7656 [2022-07-14 13:52:48,912 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 749 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 916 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 13:52:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-14 13:52:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2022-07-14 13:52:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 236 states have (on average 1.1228813559322033) internal successors, (265), 237 states have internal predecessors, (265), 33 states have call successors, (33), 21 states have call predecessors, (33), 23 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2022-07-14 13:52:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 333 transitions. [2022-07-14 13:52:48,927 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 333 transitions. Word has length 46 [2022-07-14 13:52:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:48,927 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 333 transitions. [2022-07-14 13:52:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 333 transitions. [2022-07-14 13:52:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-14 13:52:48,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:48,928 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:48,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-14 13:52:49,147 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2078564830, now seen corresponding path program 2 times [2022-07-14 13:52:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:49,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986914044] [2022-07-14 13:52:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:52:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 13:52:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986914044] [2022-07-14 13:52:49,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986914044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364278978] [2022-07-14 13:52:49,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:52:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:49,331 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) [2022-07-14 13:52:49,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 13:52:49,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:52:49,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:49,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:52:49,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 13:52:49,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 13:52:50,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364278978] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:50,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:50,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2022-07-14 13:52:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178728575] [2022-07-14 13:52:50,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:50,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-14 13:52:50,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-14 13:52:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:52:50,210 INFO L87 Difference]: Start difference. First operand 294 states and 333 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-14 13:52:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:50,615 INFO L93 Difference]: Finished difference Result 323 states and 369 transitions. [2022-07-14 13:52:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:52:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 68 [2022-07-14 13:52:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:50,617 INFO L225 Difference]: With dead ends: 323 [2022-07-14 13:52:50,617 INFO L226 Difference]: Without dead ends: 314 [2022-07-14 13:52:50,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2022-07-14 13:52:50,618 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 176 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:50,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 851 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-14 13:52:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-14 13:52:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 252 states have (on average 1.1150793650793651) internal successors, (281), 253 states have internal predecessors, (281), 33 states have call successors, (33), 21 states have call predecessors, (33), 27 states have return successors, (39), 39 states have call predecessors, (39), 32 states have call successors, (39) [2022-07-14 13:52:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 353 transitions. [2022-07-14 13:52:50,633 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 353 transitions. Word has length 68 [2022-07-14 13:52:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:50,634 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 353 transitions. [2022-07-14 13:52:50,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-14 13:52:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 353 transitions. [2022-07-14 13:52:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-14 13:52:50,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:50,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:50,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:50,858 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,SelfDestructingSolverStorable22 [2022-07-14 13:52:50,858 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -153968340, now seen corresponding path program 1 times [2022-07-14 13:52:50,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:50,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702067152] [2022-07-14 13:52:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-14 13:52:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 13:52:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 13:52:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 13:52:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 13:52:50,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:50,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702067152] [2022-07-14 13:52:50,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702067152] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:50,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361641840] [2022-07-14 13:52:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:50,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:50,985 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) [2022-07-14 13:52:51,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 13:52:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:51,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 13:52:51,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 13:52:51,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 13:52:52,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361641840] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:52,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:52,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 24 [2022-07-14 13:52:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791459102] [2022-07-14 13:52:52,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 13:52:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 13:52:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:52:52,062 INFO L87 Difference]: Start difference. First operand 314 states and 353 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2022-07-14 13:52:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:52,309 INFO L93 Difference]: Finished difference Result 522 states and 598 transitions. [2022-07-14 13:52:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 13:52:52,309 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 78 [2022-07-14 13:52:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:52,310 INFO L225 Difference]: With dead ends: 522 [2022-07-14 13:52:52,310 INFO L226 Difference]: Without dead ends: 74 [2022-07-14 13:52:52,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 13:52:52,313 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 124 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:52,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 467 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-14 13:52:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-14 13:52:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 13:52:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-07-14 13:52:52,317 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 78 [2022-07-14 13:52:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:52,317 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-07-14 13:52:52,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2022-07-14 13:52:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-07-14 13:52:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-14 13:52:52,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:52,318 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:52,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:52,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:52,535 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1185635234, now seen corresponding path program 3 times [2022-07-14 13:52:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:52,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316514835] [2022-07-14 13:52:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 13:52:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-14 13:52:52,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:52,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316514835] [2022-07-14 13:52:52,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316514835] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:52,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945308684] [2022-07-14 13:52:52,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:52:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:52,921 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) [2022-07-14 13:52:52,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-14 13:52:53,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-14 13:52:53,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:53,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-14 13:52:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-14 13:52:53,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:57,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945308684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:57,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:52:57,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-14 13:52:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593281880] [2022-07-14 13:52:57,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-14 13:52:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-14 13:52:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1112, Unknown=1, NotChecked=0, Total=1260 [2022-07-14 13:52:57,556 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-14 13:52:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:58,242 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-14 13:52:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 13:52:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) Word has length 130 [2022-07-14 13:52:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:58,243 INFO L225 Difference]: With dead ends: 83 [2022-07-14 13:52:58,243 INFO L226 Difference]: Without dead ends: 80 [2022-07-14 13:52:58,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=354, Invalid=2401, Unknown=1, NotChecked=0, Total=2756 [2022-07-14 13:52:58,245 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 105 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:58,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 581 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:52:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-14 13:52:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-07-14 13:52:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 11 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-14 13:52:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-07-14 13:52:58,249 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 130 [2022-07-14 13:52:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:58,249 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-07-14 13:52:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-14 13:52:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-07-14 13:52:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-14 13:52:58,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:58,251 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:58,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-14 13:52:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:58,475 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:52:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1601731370, now seen corresponding path program 4 times [2022-07-14 13:52:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:58,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418876536] [2022-07-14 13:52:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 13:52:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:52:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-14 13:52:58,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:58,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418876536] [2022-07-14 13:52:58,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418876536] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:58,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553346370] [2022-07-14 13:52:58,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:52:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:58,977 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) [2022-07-14 13:52:59,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-14 13:52:59,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:52:59,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:59,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-14 13:52:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-14 13:52:59,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:01,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553346370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:01,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:01,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-14 13:53:01,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419522205] [2022-07-14 13:53:01,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:01,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-14 13:53:01,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-14 13:53:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2022-07-14 13:53:01,967 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-14 13:53:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:02,845 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2022-07-14 13:53:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 13:53:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) Word has length 142 [2022-07-14 13:53:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:02,846 INFO L225 Difference]: With dead ends: 88 [2022-07-14 13:53:02,846 INFO L226 Difference]: Without dead ends: 85 [2022-07-14 13:53:02,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 152 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=2912, Unknown=0, NotChecked=0, Total=3306 [2022-07-14 13:53:02,853 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 146 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:02,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 717 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:53:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-14 13:53:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-14 13:53:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 12 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-14 13:53:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2022-07-14 13:53:02,856 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 142 [2022-07-14 13:53:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:02,856 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2022-07-14 13:53:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-14 13:53:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2022-07-14 13:53:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-14 13:53:02,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:02,857 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:02,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:03,071 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,SelfDestructingSolverStorable25 [2022-07-14 13:53:03,071 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1100547618, now seen corresponding path program 5 times [2022-07-14 13:53:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:03,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923947942] [2022-07-14 13:53:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 13:53:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-14 13:53:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923947942] [2022-07-14 13:53:03,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923947942] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755031330] [2022-07-14 13:53:03,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:53:03,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:03,648 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) [2022-07-14 13:53:03,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-14 13:53:03,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-07-14 13:53:03,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:03,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-14 13:53:03,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-14 13:53:04,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755031330] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:05,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:05,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-14 13:53:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916171235] [2022-07-14 13:53:05,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-14 13:53:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-14 13:53:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-14 13:53:05,870 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-14 13:53:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:06,909 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-07-14 13:53:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 13:53:06,910 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-14 13:53:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:06,911 INFO L225 Difference]: With dead ends: 93 [2022-07-14 13:53:06,911 INFO L226 Difference]: Without dead ends: 90 [2022-07-14 13:53:06,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 161 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2022-07-14 13:53:06,912 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 160 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:06,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 793 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:53:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-14 13:53:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-07-14 13:53:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 13 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-14 13:53:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-07-14 13:53:06,917 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 154 [2022-07-14 13:53:06,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:06,917 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-07-14 13:53:06,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-14 13:53:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-07-14 13:53:06,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-14 13:53:06,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:06,919 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:06,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-14 13:53:07,120 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash -583518762, now seen corresponding path program 6 times [2022-07-14 13:53:07,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:07,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195541700] [2022-07-14 13:53:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:07,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:53:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-14 13:53:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:07,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195541700] [2022-07-14 13:53:07,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195541700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:07,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697117542] [2022-07-14 13:53:07,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:53:07,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:07,790 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:07,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-14 13:53:07,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-07-14 13:53:07,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:07,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-14 13:53:07,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-14 13:53:08,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:18,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697117542] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:18,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:18,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-14 13:53:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759184042] [2022-07-14 13:53:18,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-14 13:53:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-14 13:53:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1787, Unknown=1, NotChecked=0, Total=1980 [2022-07-14 13:53:18,727 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-14 13:53:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:19,868 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2022-07-14 13:53:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-14 13:53:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) Word has length 152 [2022-07-14 13:53:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:19,869 INFO L225 Difference]: With dead ends: 98 [2022-07-14 13:53:19,869 INFO L226 Difference]: Without dead ends: 95 [2022-07-14 13:53:19,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 158 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=474, Invalid=4081, Unknown=1, NotChecked=0, Total=4556 [2022-07-14 13:53:19,871 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:19,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1024 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 13:53:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-14 13:53:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-07-14 13:53:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 14 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 13:53:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-07-14 13:53:19,876 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 152 [2022-07-14 13:53:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:19,876 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-07-14 13:53:19,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-14 13:53:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-07-14 13:53:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-14 13:53:19,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:19,878 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:19,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-14 13:53:20,103 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1895725022, now seen corresponding path program 7 times [2022-07-14 13:53:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:20,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904319597] [2022-07-14 13:53:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:53:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-14 13:53:20,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904319597] [2022-07-14 13:53:20,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904319597] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629669441] [2022-07-14 13:53:20,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:53:20,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:20,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:20,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-14 13:53:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-14 13:53:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-14 13:53:21,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629669441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:26,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:26,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-14 13:53:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338353661] [2022-07-14 13:53:26,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-14 13:53:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-14 13:53:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-07-14 13:53:26,083 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 13:53:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:27,404 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2022-07-14 13:53:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-14 13:53:27,404 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-07-14 13:53:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:27,405 INFO L225 Difference]: With dead ends: 103 [2022-07-14 13:53:27,405 INFO L226 Difference]: Without dead ends: 100 [2022-07-14 13:53:27,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 170 SyntacticMatches, 11 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=514, Invalid=4742, Unknown=0, NotChecked=0, Total=5256 [2022-07-14 13:53:27,407 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 143 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:27,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1017 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 13:53:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-14 13:53:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-07-14 13:53:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 15 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-14 13:53:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2022-07-14 13:53:27,415 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 164 [2022-07-14 13:53:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:27,415 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2022-07-14 13:53:27,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 13:53:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2022-07-14 13:53:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-14 13:53:27,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:27,417 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:27,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:27,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-14 13:53:27,623 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1407733590, now seen corresponding path program 8 times [2022-07-14 13:53:27,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:27,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804594091] [2022-07-14 13:53:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:53:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-14 13:53:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:28,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804594091] [2022-07-14 13:53:28,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804594091] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:28,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670893164] [2022-07-14 13:53:28,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:53:28,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:28,476 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-14 13:53:28,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:53:28,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:28,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-14 13:53:28,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-14 13:53:29,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:32,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670893164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:32,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:32,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-14 13:53:32,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171982462] [2022-07-14 13:53:32,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:32,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-14 13:53:32,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-14 13:53:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-14 13:53:32,448 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-14 13:53:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:33,885 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2022-07-14 13:53:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-14 13:53:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) Word has length 176 [2022-07-14 13:53:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:33,887 INFO L225 Difference]: With dead ends: 108 [2022-07-14 13:53:33,887 INFO L226 Difference]: Without dead ends: 105 [2022-07-14 13:53:33,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=427, Invalid=5123, Unknown=0, NotChecked=0, Total=5550 [2022-07-14 13:53:33,889 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 199 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:33,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1086 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:53:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-14 13:53:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-07-14 13:53:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-14 13:53:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2022-07-14 13:53:33,893 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 176 [2022-07-14 13:53:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:33,893 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2022-07-14 13:53:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-14 13:53:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2022-07-14 13:53:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-14 13:53:33,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:33,895 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:33,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:34,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:34,103 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1969189538, now seen corresponding path program 9 times [2022-07-14 13:53:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:34,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626667935] [2022-07-14 13:53:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:53:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-14 13:53:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:34,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626667935] [2022-07-14 13:53:34,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626667935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:34,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295953883] [2022-07-14 13:53:34,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:53:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:34,977 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:34,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-14 13:53:35,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-14 13:53:35,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:35,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-14 13:53:35,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-14 13:53:36,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:39,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295953883] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:39,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:39,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-14 13:53:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646593758] [2022-07-14 13:53:39,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:39,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-14 13:53:39,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-14 13:53:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 13:53:39,748 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-14 13:53:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:41,381 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2022-07-14 13:53:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-14 13:53:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) Word has length 188 [2022-07-14 13:53:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:41,382 INFO L225 Difference]: With dead ends: 113 [2022-07-14 13:53:41,382 INFO L226 Difference]: Without dead ends: 110 [2022-07-14 13:53:41,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=458, Invalid=5862, Unknown=0, NotChecked=0, Total=6320 [2022-07-14 13:53:41,384 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 213 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:41,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1101 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 13:53:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-14 13:53:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-07-14 13:53:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 17 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-14 13:53:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2022-07-14 13:53:41,389 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 188 [2022-07-14 13:53:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:41,389 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2022-07-14 13:53:41,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-14 13:53:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2022-07-14 13:53:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-14 13:53:41,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:41,391 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:41,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:41,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:41,605 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1413173590, now seen corresponding path program 10 times [2022-07-14 13:53:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:41,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238490465] [2022-07-14 13:53:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:41,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 13:53:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-14 13:53:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238490465] [2022-07-14 13:53:42,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238490465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335907116] [2022-07-14 13:53:42,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:53:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:42,612 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-14 13:53:43,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:53:43,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:43,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-14 13:53:43,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-14 13:53:44,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335907116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:48,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:48,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-14 13:53:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368278210] [2022-07-14 13:53:48,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-14 13:53:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-14 13:53:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 13:53:48,117 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 13:53:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:50,026 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2022-07-14 13:53:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-14 13:53:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) Word has length 214 [2022-07-14 13:53:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:50,027 INFO L225 Difference]: With dead ends: 118 [2022-07-14 13:53:50,027 INFO L226 Difference]: Without dead ends: 115 [2022-07-14 13:53:50,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=489, Invalid=6651, Unknown=0, NotChecked=0, Total=7140 [2022-07-14 13:53:50,029 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 174 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:50,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1380 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 13:53:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-14 13:53:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2022-07-14 13:53:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 13:53:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2022-07-14 13:53:50,033 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 214 [2022-07-14 13:53:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:50,033 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2022-07-14 13:53:50,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 13:53:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2022-07-14 13:53:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-14 13:53:50,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:50,036 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:50,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:50,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:53:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1244183842, now seen corresponding path program 11 times [2022-07-14 13:53:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:50,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785694391] [2022-07-14 13:53:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:53:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:53:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 739 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-07-14 13:53:51,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785694391] [2022-07-14 13:53:51,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785694391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:51,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035680105] [2022-07-14 13:53:51,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:53:51,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:51,337 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:51,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-14 13:53:51,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-14 13:53:51,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:51,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-14 13:53:51,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 739 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-07-14 13:53:52,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:57,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035680105] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:57,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:57,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-14 13:53:57,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689391205] [2022-07-14 13:53:57,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:57,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-14 13:53:57,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-14 13:53:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-14 13:53:57,678 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-14 13:53:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:59,806 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2022-07-14 13:53:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-14 13:53:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) Word has length 212 [2022-07-14 13:53:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:59,807 INFO L225 Difference]: With dead ends: 123 [2022-07-14 13:53:59,807 INFO L226 Difference]: Without dead ends: 120 [2022-07-14 13:53:59,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 215 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=520, Invalid=7490, Unknown=0, NotChecked=0, Total=8010 [2022-07-14 13:53:59,808 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 185 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:59,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1577 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 13:53:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-14 13:53:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-14 13:53:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (19), 19 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-14 13:53:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2022-07-14 13:53:59,813 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 212 [2022-07-14 13:53:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:59,813 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2022-07-14 13:53:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-14 13:53:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2022-07-14 13:53:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-14 13:53:59,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:59,816 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:59,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-14 13:54:00,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:00,031 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:54:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -454350122, now seen corresponding path program 12 times [2022-07-14 13:54:00,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:00,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227048675] [2022-07-14 13:54:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 13:54:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 0 proven. 1060 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2022-07-14 13:54:01,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:01,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227048675] [2022-07-14 13:54:01,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227048675] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:01,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096050487] [2022-07-14 13:54:01,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:54:01,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:01,226 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:01,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-14 13:54:01,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-07-14 13:54:01,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:01,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-14 13:54:01,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 0 proven. 1060 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2022-07-14 13:54:02,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:08,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096050487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:08,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:08,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-14 13:54:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921888552] [2022-07-14 13:54:08,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:08,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-14 13:54:08,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-14 13:54:08,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-14 13:54:08,449 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-14 13:54:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:10,855 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-07-14 13:54:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-14 13:54:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) Word has length 238 [2022-07-14 13:54:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:10,857 INFO L225 Difference]: With dead ends: 128 [2022-07-14 13:54:10,857 INFO L226 Difference]: Without dead ends: 125 [2022-07-14 13:54:10,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 245 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=551, Invalid=8379, Unknown=0, NotChecked=0, Total=8930 [2022-07-14 13:54:10,859 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 252 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:10,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1476 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 13:54:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-14 13:54:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2022-07-14 13:54:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 19 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 13:54:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2022-07-14 13:54:10,863 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 238 [2022-07-14 13:54:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:10,863 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2022-07-14 13:54:10,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-14 13:54:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2022-07-14 13:54:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-14 13:54:10,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:10,865 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:10,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-14 13:54:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:11,079 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:54:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1020958814, now seen corresponding path program 13 times [2022-07-14 13:54:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739859350] [2022-07-14 13:54:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:54:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-07-14 13:54:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739859350] [2022-07-14 13:54:12,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739859350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376607700] [2022-07-14 13:54:12,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:54:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:12,399 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-14 13:54:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:12,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-14 13:54:12,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-07-14 13:54:14,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376607700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:20,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:20,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2022-07-14 13:54:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072235043] [2022-07-14 13:54:20,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:20,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-14 13:54:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-14 13:54:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2022-07-14 13:54:20,788 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-14 13:54:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:23,413 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2022-07-14 13:54:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-14 13:54:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) Word has length 236 [2022-07-14 13:54:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:23,415 INFO L225 Difference]: With dead ends: 133 [2022-07-14 13:54:23,415 INFO L226 Difference]: Without dead ends: 130 [2022-07-14 13:54:23,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 239 SyntacticMatches, 17 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=582, Invalid=9318, Unknown=0, NotChecked=0, Total=9900 [2022-07-14 13:54:23,417 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 205 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:23,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1767 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 13:54:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-14 13:54:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-07-14 13:54:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (21), 21 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-14 13:54:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2022-07-14 13:54:23,421 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 236 [2022-07-14 13:54:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:23,421 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2022-07-14 13:54:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-14 13:54:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2022-07-14 13:54:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-14 13:54:23,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:23,423 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:23,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-14 13:54:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-14 13:54:23,636 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:54:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1916511274, now seen corresponding path program 14 times [2022-07-14 13:54:23,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790135594] [2022-07-14 13:54:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:54:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:54:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2110 backedges. 0 proven. 1021 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-07-14 13:54:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:25,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790135594] [2022-07-14 13:54:25,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790135594] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:25,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093543164] [2022-07-14 13:54:25,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:54:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:25,051 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:25,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-14 13:54:25,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:54:25,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:25,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-14 13:54:25,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2110 backedges. 0 proven. 1021 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-07-14 13:54:27,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:56:26,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093543164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:26,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:56:26,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2022-07-14 13:56:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181843868] [2022-07-14 13:56:26,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:56:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-14 13:56:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:56:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-14 13:56:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=4330, Unknown=50, NotChecked=0, Total=4692 [2022-07-14 13:56:26,970 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-14 13:56:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:56:29,900 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2022-07-14 13:56:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 13:56:29,900 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) Word has length 248 [2022-07-14 13:56:29,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:56:29,902 INFO L225 Difference]: With dead ends: 138 [2022-07-14 13:56:29,902 INFO L226 Difference]: Without dead ends: 135 [2022-07-14 13:56:29,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 254 SyntacticMatches, 18 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 108.9s TimeCoverageRelationStatistics Valid=794, Invalid=10712, Unknown=50, NotChecked=0, Total=11556 [2022-07-14 13:56:29,904 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 277 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:56:29,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2005 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 13:56:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-14 13:56:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2022-07-14 13:56:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 4 states have call successors, (4), 3 states have call predecessors, (4), 21 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-14 13:56:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2022-07-14 13:56:29,910 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 248 [2022-07-14 13:56:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:56:29,912 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2022-07-14 13:56:29,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-14 13:56:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2022-07-14 13:56:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-14 13:56:29,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:56:29,913 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:56:29,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-14 13:56:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-14 13:56:30,119 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-14 13:56:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:56:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2082304546, now seen corresponding path program 15 times [2022-07-14 13:56:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:56:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766793662] [2022-07-14 13:56:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:56:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:56:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 13:56:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 13:56:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-14 13:56:31,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:56:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766793662] [2022-07-14 13:56:31,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766793662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42371554] [2022-07-14 13:56:31,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:56:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:56:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:56:31,632 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:56:31,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-14 13:56:32,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-07-14 13:56:32,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:56:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-14 13:56:32,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:56:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-14 13:56:33,949 INFO L328 TraceCheckSpWp]: Computing backward predicates...