./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 35987657 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/MultCommutative-2.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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:42:46,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:42:46,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:42:46,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:42:46,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:42:46,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:42:46,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:42:46,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:42:46,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:42:46,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:42:46,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:42:46,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:42:46,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:42:46,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:42:46,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:42:46,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:42:46,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:42:46,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:42:46,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:42:46,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:42:46,580 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:42:46,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:42:46,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:42:46,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:42:46,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:42:46,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:42:46,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:42:46,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:42:46,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:42:46,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:42:46,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:42:46,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:42:46,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:42:46,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:42:46,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:42:46,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:42:46,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:42:46,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:42:46,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:42:46,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:42:46,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:42:46,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:42:46,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-22 00:42:46,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:42:46,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:42:46,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:42:46,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:42:46,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:42:46,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:42:46,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:42:46,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:42:46,634 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:42:46,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:42:46,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 00:42:46,635 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:42:46,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:42:46,636 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:42:46,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 00:42:46,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:42:46,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:42:46,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:42:46,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:42:46,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:42:46,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:42:46,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:42:46,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:42:46,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:42:46,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:42:46,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:42:46,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:42:46,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:42:46,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-07-22 00:42:46,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:42:46,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:42:46,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:42:46,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:42:46,895 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:42:46,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-22 00:42:46,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d34423f/d9eb6a5dd4454e828b5c1c01c07bb400/FLAG1c801fab2 [2022-07-22 00:42:47,247 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:42:47,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-22 00:42:47,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d34423f/d9eb6a5dd4454e828b5c1c01c07bb400/FLAG1c801fab2 [2022-07-22 00:42:47,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d34423f/d9eb6a5dd4454e828b5c1c01c07bb400 [2022-07-22 00:42:47,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:42:47,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:42:47,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:42:47,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:42:47,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:42:47,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f389395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47, skipping insertion in model container [2022-07-22 00:42:47,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:42:47,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:42:47,817 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/MultCommutative-2.c[970,983] [2022-07-22 00:42:47,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:42:47,823 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:42:47,832 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/MultCommutative-2.c[970,983] [2022-07-22 00:42:47,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:42:47,847 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:42:47,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47 WrapperNode [2022-07-22 00:42:47,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:42:47,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:42:47,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:42:47,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:42:47,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,876 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-22 00:42:47,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:42:47,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:42:47,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:42:47,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:42:47,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:42:47,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:42:47,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:42:47,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:42:47,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (1/1) ... [2022-07-22 00:42:47,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:42:47,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:47,949 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) [2022-07-22 00:42:47,971 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 [2022-07-22 00:42:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 00:42:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-22 00:42:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-22 00:42:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:42:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:42:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 00:42:48,023 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:42:48,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:42:48,178 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:42:48,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:42:48,183 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 00:42:48,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:42:48 BoogieIcfgContainer [2022-07-22 00:42:48,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:42:48,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:42:48,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:42:48,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:42:48,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:42:47" (1/3) ... [2022-07-22 00:42:48,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3eec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:42:48, skipping insertion in model container [2022-07-22 00:42:48,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:42:47" (2/3) ... [2022-07-22 00:42:48,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3eec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:42:48, skipping insertion in model container [2022-07-22 00:42:48,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:42:48" (3/3) ... [2022-07-22 00:42:48,212 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-07-22 00:42:48,220 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:42:48,221 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 00:42:48,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:42:48,270 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@e91962e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@eda4f30 [2022-07-22 00:42:48,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 00:42:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 00:42:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 00:42:48,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:48,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:48,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-07-22 00:42:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:48,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009334906] [2022-07-22 00:42:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:48,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009334906] [2022-07-22 00:42:48,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009334906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:48,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:48,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:42:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390156828] [2022-07-22 00:42:48,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:48,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:48,469 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:48,577 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-07-22 00:42:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:42:48,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 00:42:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:48,589 INFO L225 Difference]: With dead ends: 81 [2022-07-22 00:42:48,590 INFO L226 Difference]: Without dead ends: 43 [2022-07-22 00:42:48,594 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 [2022-07-22 00:42:48,599 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:48,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-22 00:42:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-07-22 00:42:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 00:42:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-07-22 00:42:48,648 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-07-22 00:42:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:48,648 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-07-22 00:42:48,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-07-22 00:42:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 00:42:48,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:48,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:48,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:42:48,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-07-22 00:42:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:48,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166457731] [2022-07-22 00:42:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:48,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166457731] [2022-07-22 00:42:48,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166457731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:48,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:48,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:42:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61344849] [2022-07-22 00:42:48,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:48,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:48,709 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:48,783 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-07-22 00:42:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:42:48,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 00:42:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:48,785 INFO L225 Difference]: With dead ends: 59 [2022-07-22 00:42:48,785 INFO L226 Difference]: Without dead ends: 57 [2022-07-22 00:42:48,785 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 [2022-07-22 00:42:48,786 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:48,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-22 00:42:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-07-22 00:42:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 00:42:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-22 00:42:48,794 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-07-22 00:42:48,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:48,794 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-22 00:42:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-22 00:42:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 00:42:48,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:48,795 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:42:48,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-07-22 00:42:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:48,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672877650] [2022-07-22 00:42:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:48,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672877650] [2022-07-22 00:42:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672877650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:48,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:48,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:42:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603844790] [2022-07-22 00:42:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:48,828 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-22 00:42:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:48,884 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-07-22 00:42:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:42:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2022-07-22 00:42:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:48,886 INFO L225 Difference]: With dead ends: 77 [2022-07-22 00:42:48,886 INFO L226 Difference]: Without dead ends: 76 [2022-07-22 00:42:48,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 00:42:48,887 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:48,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-22 00:42:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-07-22 00:42:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 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) [2022-07-22 00:42:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-22 00:42:48,910 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-07-22 00:42:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:48,910 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-22 00:42:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-22 00:42:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-22 00:42:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 00:42:48,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:48,911 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 00:42:48,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-07-22 00:42:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862436255] [2022-07-22 00:42:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862436255] [2022-07-22 00:42:48,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862436255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:48,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:48,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:42:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391623496] [2022-07-22 00:42:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:48,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:48,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:48,979 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 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) [2022-07-22 00:42:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:49,023 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-07-22 00:42:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:42:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 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 15 [2022-07-22 00:42:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:49,035 INFO L225 Difference]: With dead ends: 121 [2022-07-22 00:42:49,036 INFO L226 Difference]: Without dead ends: 85 [2022-07-22 00:42:49,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 00:42:49,038 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:49,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-22 00:42:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-22 00:42:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 00:42:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-07-22 00:42:49,056 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-07-22 00:42:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:49,058 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-07-22 00:42:49,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 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) [2022-07-22 00:42:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-07-22 00:42:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-22 00:42:49,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:49,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 00:42:49,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-07-22 00:42:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:49,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493717167] [2022-07-22 00:42:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:49,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493717167] [2022-07-22 00:42:49,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493717167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:49,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:49,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:42:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724252690] [2022-07-22 00:42:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:49,114 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 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) [2022-07-22 00:42:49,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:49,171 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-07-22 00:42:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:42:49,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 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 16 [2022-07-22 00:42:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:49,173 INFO L225 Difference]: With dead ends: 102 [2022-07-22 00:42:49,173 INFO L226 Difference]: Without dead ends: 101 [2022-07-22 00:42:49,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 00:42:49,174 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:49,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-22 00:42:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-07-22 00:42:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-22 00:42:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-07-22 00:42:49,182 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-07-22 00:42:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:49,182 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-07-22 00:42:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 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) [2022-07-22 00:42:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-07-22 00:42:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 00:42:49,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:49,183 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:49,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 00:42:49,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-07-22 00:42:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:49,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282501812] [2022-07-22 00:42:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282501812] [2022-07-22 00:42:49,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282501812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:42:49,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:42:49,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 00:42:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140386745] [2022-07-22 00:42:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:42:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:42:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:42:49,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:42:49,231 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-07-22 00:42:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:49,269 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-07-22 00:42:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 00:42:49,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2022-07-22 00:42:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:49,271 INFO L225 Difference]: With dead ends: 133 [2022-07-22 00:42:49,271 INFO L226 Difference]: Without dead ends: 59 [2022-07-22 00:42:49,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 00:42:49,281 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:49,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-22 00:42:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-07-22 00:42:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 00:42:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-07-22 00:42:49,287 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-07-22 00:42:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:49,287 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-07-22 00:42:49,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-07-22 00:42:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-07-22 00:42:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 00:42:49,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:49,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:49,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 00:42:49,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-07-22 00:42:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549178353] [2022-07-22 00:42:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:42:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:49,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549178353] [2022-07-22 00:42:49,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549178353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893488853] [2022-07-22 00:42:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:49,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:49,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:49,412 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) [2022-07-22 00:42:49,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 00:42:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 00:42:49,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:49,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:49,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893488853] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:49,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:49,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-22 00:42:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969879331] [2022-07-22 00:42:49,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:49,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 00:42:49,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 00:42:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-22 00:42:49,624 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:49,717 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-07-22 00:42:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 00:42:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-07-22 00:42:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:49,718 INFO L225 Difference]: With dead ends: 67 [2022-07-22 00:42:49,718 INFO L226 Difference]: Without dead ends: 66 [2022-07-22 00:42:49,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-22 00:42:49,719 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:49,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-22 00:42:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-07-22 00:42:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 00:42:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-07-22 00:42:49,725 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-07-22 00:42:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:49,725 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-07-22 00:42:49,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-07-22 00:42:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 00:42:49,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:49,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:49,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:49,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-07-22 00:42:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:49,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717820936] [2022-07-22 00:42:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:49,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:42:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:50,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717820936] [2022-07-22 00:42:50,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717820936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:50,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959277000] [2022-07-22 00:42:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:50,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:50,007 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) [2022-07-22 00:42:50,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 00:42:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 00:42:50,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:50,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:50,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959277000] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:50,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:50,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-22 00:42:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913982125] [2022-07-22 00:42:50,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 00:42:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:50,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 00:42:50,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-22 00:42:50,110 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 00:42:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:50,186 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-07-22 00:42:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 00:42:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-22 00:42:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:50,187 INFO L225 Difference]: With dead ends: 65 [2022-07-22 00:42:50,187 INFO L226 Difference]: Without dead ends: 64 [2022-07-22 00:42:50,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-22 00:42:50,189 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:50,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-22 00:42:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-22 00:42:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 00:42:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-07-22 00:42:50,194 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-07-22 00:42:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:50,194 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-07-22 00:42:50,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 00:42:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-07-22 00:42:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 00:42:50,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:50,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:50,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:50,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 00:42:50,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-07-22 00:42:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67771838] [2022-07-22 00:42:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 00:42:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:50,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67771838] [2022-07-22 00:42:50,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67771838] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:50,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949669110] [2022-07-22 00:42:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:50,510 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) [2022-07-22 00:42:50,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 00:42:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 00:42:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:50,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:50,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949669110] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:50,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:50,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-07-22 00:42:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443413943] [2022-07-22 00:42:50,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:50,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 00:42:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 00:42:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 00:42:50,671 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:50,782 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-07-22 00:42:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 00:42:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-07-22 00:42:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:50,783 INFO L225 Difference]: With dead ends: 94 [2022-07-22 00:42:50,783 INFO L226 Difference]: Without dead ends: 93 [2022-07-22 00:42:50,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-07-22 00:42:50,783 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:50,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:50,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-22 00:42:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-07-22 00:42:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-22 00:42:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-07-22 00:42:50,789 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-07-22 00:42:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-07-22 00:42:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-07-22 00:42:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 00:42:50,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:50,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:50,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:51,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:51,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-07-22 00:42:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:51,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159435899] [2022-07-22 00:42:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 00:42:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 00:42:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:51,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159435899] [2022-07-22 00:42:51,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159435899] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:51,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390120073] [2022-07-22 00:42:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:51,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:51,073 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) [2022-07-22 00:42:51,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 00:42:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 00:42:51,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 00:42:51,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 00:42:51,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390120073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:51,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:51,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-22 00:42:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149513766] [2022-07-22 00:42:51,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 00:42:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 00:42:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-22 00:42:51,167 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:51,222 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-07-22 00:42:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 00:42:51,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-07-22 00:42:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:51,223 INFO L225 Difference]: With dead ends: 97 [2022-07-22 00:42:51,223 INFO L226 Difference]: Without dead ends: 64 [2022-07-22 00:42:51,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-22 00:42:51,224 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:51,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:42:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-22 00:42:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-07-22 00:42:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 00:42:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-07-22 00:42:51,228 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-07-22 00:42:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:51,228 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-07-22 00:42:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 00:42:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-07-22 00:42:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 00:42:51,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:51,229 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:51,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:51,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:51,440 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-07-22 00:42:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:51,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779088508] [2022-07-22 00:42:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:51,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:42:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779088508] [2022-07-22 00:42:51,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779088508] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:51,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645316121] [2022-07-22 00:42:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:51,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:51,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:51,523 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) [2022-07-22 00:42:51,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 00:42:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:51,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 00:42:51,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:51,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 00:42:51,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645316121] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:51,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:51,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-22 00:42:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464556437] [2022-07-22 00:42:51,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 00:42:51,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 00:42:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-22 00:42:51,774 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-22 00:42:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:52,001 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-07-22 00:42:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 00:42:52,002 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2022-07-22 00:42:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:52,003 INFO L225 Difference]: With dead ends: 87 [2022-07-22 00:42:52,003 INFO L226 Difference]: Without dead ends: 86 [2022-07-22 00:42:52,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2022-07-22 00:42:52,003 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:52,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-22 00:42:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-07-22 00:42:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-22 00:42:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-22 00:42:52,008 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2022-07-22 00:42:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:52,008 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-22 00:42:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-22 00:42:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-22 00:42:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 00:42:52,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:52,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:52,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 00:42:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 00:42:52,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2022-07-22 00:42:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:52,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595994578] [2022-07-22 00:42:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:52,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:42:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 00:42:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:52,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595994578] [2022-07-22 00:42:52,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595994578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:52,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606040227] [2022-07-22 00:42:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:52,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:52,302 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) [2022-07-22 00:42:52,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 00:42:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:52,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 00:42:52,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 00:42:52,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 00:42:52,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606040227] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:52,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:52,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-07-22 00:42:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239377607] [2022-07-22 00:42:52,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 00:42:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 00:42:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-07-22 00:42:52,550 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 00:42:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:52,867 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-22 00:42:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 00:42:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2022-07-22 00:42:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:52,869 INFO L225 Difference]: With dead ends: 128 [2022-07-22 00:42:52,869 INFO L226 Difference]: Without dead ends: 123 [2022-07-22 00:42:52,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 00:42:52,877 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:52,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 94 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-22 00:42:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2022-07-22 00:42:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-22 00:42:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-07-22 00:42:52,887 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2022-07-22 00:42:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:52,888 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-07-22 00:42:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 00:42:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-07-22 00:42:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 00:42:52,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:52,892 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:52,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:53,105 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2022-07-22 00:42:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076505149] [2022-07-22 00:42:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:42:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 00:42:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:53,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076505149] [2022-07-22 00:42:53,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076505149] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:53,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930126845] [2022-07-22 00:42:53,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:42:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:53,245 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) [2022-07-22 00:42:53,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 00:42:53,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:42:53,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 00:42:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 00:42:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 00:42:54,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930126845] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:54,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:54,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-07-22 00:42:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089140091] [2022-07-22 00:42:54,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:54,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 00:42:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 00:42:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-07-22 00:42:54,083 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 00:42:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:54,648 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-07-22 00:42:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 00:42:54,649 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2022-07-22 00:42:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:54,650 INFO L225 Difference]: With dead ends: 140 [2022-07-22 00:42:54,650 INFO L226 Difference]: Without dead ends: 139 [2022-07-22 00:42:54,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 00:42:54,651 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:54,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 176 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 00:42:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-22 00:42:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2022-07-22 00:42:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-22 00:42:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-07-22 00:42:54,655 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2022-07-22 00:42:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:54,656 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-07-22 00:42:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 00:42:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-07-22 00:42:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 00:42:54,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:54,657 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:54,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:54,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:54,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2022-07-22 00:42:54,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:54,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928144233] [2022-07-22 00:42:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:42:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 00:42:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928144233] [2022-07-22 00:42:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928144233] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679744023] [2022-07-22 00:42:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:42:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:54,943 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) [2022-07-22 00:42:54,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 00:42:54,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:42:54,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 00:42:54,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 00:42:55,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 00:42:55,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679744023] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:55,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:55,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-22 00:42:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630105392] [2022-07-22 00:42:55,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 00:42:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 00:42:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-22 00:42:55,206 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-22 00:42:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:55,419 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-07-22 00:42:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 00:42:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 47 [2022-07-22 00:42:55,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:55,421 INFO L225 Difference]: With dead ends: 110 [2022-07-22 00:42:55,421 INFO L226 Difference]: Without dead ends: 105 [2022-07-22 00:42:55,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-07-22 00:42:55,422 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:55,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 173 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:42:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-22 00:42:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-07-22 00:42:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-22 00:42:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-07-22 00:42:55,425 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2022-07-22 00:42:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:55,426 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-07-22 00:42:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-22 00:42:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-07-22 00:42:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 00:42:55,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:55,427 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:55,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:55,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 00:42:55,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2022-07-22 00:42:55,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:55,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732048053] [2022-07-22 00:42:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:55,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:42:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 00:42:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 00:42:55,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:55,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732048053] [2022-07-22 00:42:55,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732048053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:55,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264221285] [2022-07-22 00:42:55,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:42:55,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:55,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:55,816 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) [2022-07-22 00:42:55,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 00:42:55,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-22 00:42:55,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:55,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 00:42:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 00:42:56,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 00:42:56,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264221285] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:56,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:56,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-07-22 00:42:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283854661] [2022-07-22 00:42:56,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 00:42:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 00:42:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 00:42:56,670 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-22 00:42:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:57,855 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-07-22 00:42:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-22 00:42:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2022-07-22 00:42:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:57,857 INFO L225 Difference]: With dead ends: 208 [2022-07-22 00:42:57,857 INFO L226 Difference]: Without dead ends: 191 [2022-07-22 00:42:57,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2022-07-22 00:42:57,858 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:57,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 240 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 00:42:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-22 00:42:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2022-07-22 00:42:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-22 00:42:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-07-22 00:42:57,863 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2022-07-22 00:42:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:57,863 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-07-22 00:42:57,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-22 00:42:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-07-22 00:42:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 00:42:57,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:57,864 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:42:57,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 00:42:58,082 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:42:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2022-07-22 00:42:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310424782] [2022-07-22 00:42:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:42:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:42:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 00:42:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310424782] [2022-07-22 00:42:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310424782] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799848381] [2022-07-22 00:42:58,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:42:58,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:58,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:58,381 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) [2022-07-22 00:42:58,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 00:42:58,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-22 00:42:58,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:58,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-22 00:42:58,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 00:42:58,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:43:07,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799848381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:07,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:43:07,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-22 00:43:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812668555] [2022-07-22 00:43:07,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:43:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 00:43:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:43:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 00:43:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1284, Unknown=3, NotChecked=0, Total=1482 [2022-07-22 00:43:07,033 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 00:43:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:43:07,943 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2022-07-22 00:43:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 00:43:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2022-07-22 00:43:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:43:07,945 INFO L225 Difference]: With dead ends: 166 [2022-07-22 00:43:07,945 INFO L226 Difference]: Without dead ends: 165 [2022-07-22 00:43:07,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=514, Invalid=3515, Unknown=3, NotChecked=0, Total=4032 [2022-07-22 00:43:07,947 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 00:43:07,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 378 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 00:43:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-22 00:43:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2022-07-22 00:43:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 18 states have return successors, (28), 21 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-22 00:43:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2022-07-22 00:43:07,955 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 95 [2022-07-22 00:43:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:43:07,956 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2022-07-22 00:43:07,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 00:43:07,956 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2022-07-22 00:43:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 00:43:07,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:43:07,957 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:43:07,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 00:43:08,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 00:43:08,163 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:43:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:43:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1943630407, now seen corresponding path program 4 times [2022-07-22 00:43:08,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:43:08,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421896895] [2022-07-22 00:43:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:43:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:43:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:43:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 00:43:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:43:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421896895] [2022-07-22 00:43:08,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421896895] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498699312] [2022-07-22 00:43:08,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:43:08,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:43:08,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:43:08,552 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) [2022-07-22 00:43:08,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 00:43:08,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:43:08,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:43:08,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-22 00:43:08,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:43:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 00:43:09,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:43:37,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498699312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:37,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:43:37,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-22 00:43:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986869652] [2022-07-22 00:43:37,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:43:37,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 00:43:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:43:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 00:43:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1307, Unknown=13, NotChecked=0, Total=1482 [2022-07-22 00:43:37,608 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 00:43:39,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:43:39,155 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2022-07-22 00:43:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 00:43:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) Word has length 106 [2022-07-22 00:43:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:43:39,157 INFO L225 Difference]: With dead ends: 184 [2022-07-22 00:43:39,157 INFO L226 Difference]: Without dead ends: 183 [2022-07-22 00:43:39,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=466, Invalid=3943, Unknown=13, NotChecked=0, Total=4422 [2022-07-22 00:43:39,159 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 00:43:39,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 508 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 00:43:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-22 00:43:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2022-07-22 00:43:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 4 states have call predecessors, (6), 19 states have return successors, (30), 22 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-22 00:43:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2022-07-22 00:43:39,164 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 106 [2022-07-22 00:43:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:43:39,164 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2022-07-22 00:43:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 00:43:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2022-07-22 00:43:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 00:43:39,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:43:39,165 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:43:39,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 00:43:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 00:43:39,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:43:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:43:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1337179471, now seen corresponding path program 5 times [2022-07-22 00:43:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:43:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004915724] [2022-07-22 00:43:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:43:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:43:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:43:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 00:43:39,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:43:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004915724] [2022-07-22 00:43:39,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004915724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990939771] [2022-07-22 00:43:39,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:43:39,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:43:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:43:39,922 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) [2022-07-22 00:43:39,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 00:43:40,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-22 00:43:40,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:43:40,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 00:43:40,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:43:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 00:43:40,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:43:42,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990939771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:42,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:43:42,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-22 00:43:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301866514] [2022-07-22 00:43:42,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:43:42,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 00:43:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:43:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 00:43:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 00:43:42,532 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-22 00:43:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:43:44,191 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2022-07-22 00:43:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-22 00:43:44,192 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) Word has length 117 [2022-07-22 00:43:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:43:44,193 INFO L225 Difference]: With dead ends: 202 [2022-07-22 00:43:44,193 INFO L226 Difference]: Without dead ends: 201 [2022-07-22 00:43:44,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=4568, Unknown=0, NotChecked=0, Total=4970 [2022-07-22 00:43:44,195 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 161 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 00:43:44,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 514 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 00:43:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-22 00:43:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2022-07-22 00:43:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (32), 23 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-22 00:43:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2022-07-22 00:43:44,200 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 117 [2022-07-22 00:43:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:43:44,200 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2022-07-22 00:43:44,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-22 00:43:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2022-07-22 00:43:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 00:43:44,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:43:44,202 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:43:44,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-22 00:43:44,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 00:43:44,407 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:43:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:43:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 777113877, now seen corresponding path program 6 times [2022-07-22 00:43:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:43:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131002195] [2022-07-22 00:43:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:43:44,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:43:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 00:43:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:43:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 00:43:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:43:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131002195] [2022-07-22 00:43:45,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131002195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922155705] [2022-07-22 00:43:45,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 00:43:45,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:43:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:43:45,068 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) [2022-07-22 00:43:45,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 00:43:45,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-22 00:43:45,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:43:45,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 00:43:45,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:43:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 00:43:46,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:04,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922155705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:04,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-22 00:44:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19089367] [2022-07-22 00:44:04,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 00:44:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 00:44:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1781, Unknown=7, NotChecked=0, Total=1980 [2022-07-22 00:44:04,742 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-22 00:44:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:06,830 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2022-07-22 00:44:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-22 00:44:06,831 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2022-07-22 00:44:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:06,832 INFO L225 Difference]: With dead ends: 220 [2022-07-22 00:44:06,832 INFO L226 Difference]: Without dead ends: 219 [2022-07-22 00:44:06,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 148 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=585, Invalid=5888, Unknown=7, NotChecked=0, Total=6480 [2022-07-22 00:44:06,834 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:06,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 552 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 00:44:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-22 00:44:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2022-07-22 00:44:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 21 states have return successors, (34), 24 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-22 00:44:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2022-07-22 00:44:06,842 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 140 [2022-07-22 00:44:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:06,842 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2022-07-22 00:44:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-22 00:44:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2022-07-22 00:44:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 00:44:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:06,844 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:06,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 00:44:07,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:07,061 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211640, now seen corresponding path program 4 times [2022-07-22 00:44:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840529471] [2022-07-22 00:44:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:44:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 00:44:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-22 00:44:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:44:07,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840529471] [2022-07-22 00:44:07,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840529471] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:07,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321337430] [2022-07-22 00:44:07,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:44:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:44:07,572 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) [2022-07-22 00:44:07,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 00:44:07,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:44:07,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:44:07,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 00:44:07,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:44:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-22 00:44:08,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:14,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321337430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:14,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:14,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 34 [2022-07-22 00:44:14,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124589521] [2022-07-22 00:44:14,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:14,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 00:44:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 00:44:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1598, Unknown=2, NotChecked=0, Total=1806 [2022-07-22 00:44:14,900 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-22 00:44:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:16,645 INFO L93 Difference]: Finished difference Result 242 states and 263 transitions. [2022-07-22 00:44:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 00:44:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2022-07-22 00:44:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:16,648 INFO L225 Difference]: With dead ends: 242 [2022-07-22 00:44:16,648 INFO L226 Difference]: Without dead ends: 239 [2022-07-22 00:44:16,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=713, Invalid=4985, Unknown=2, NotChecked=0, Total=5700 [2022-07-22 00:44:16,650 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:16,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 492 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 00:44:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-22 00:44:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2022-07-22 00:44:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 160 states have internal predecessors, (168), 9 states have call successors, (9), 6 states have call predecessors, (9), 31 states have return successors, (45), 35 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-22 00:44:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2022-07-22 00:44:16,667 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 125 [2022-07-22 00:44:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2022-07-22 00:44:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-22 00:44:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2022-07-22 00:44:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 00:44:16,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:16,670 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:16,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 00:44:16,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:16,875 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1390512751, now seen corresponding path program 7 times [2022-07-22 00:44:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:16,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946959382] [2022-07-22 00:44:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:44:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-22 00:44:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:44:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946959382] [2022-07-22 00:44:17,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946959382] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127771980] [2022-07-22 00:44:17,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 00:44:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:44:17,562 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) [2022-07-22 00:44:17,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 00:44:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:17,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 00:44:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:44:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-22 00:44:18,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:21,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127771980] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:21,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:21,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-22 00:44:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775120728] [2022-07-22 00:44:21,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 00:44:21,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 00:44:21,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 00:44:21,472 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 00:44:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:23,852 INFO L93 Difference]: Finished difference Result 314 states and 347 transitions. [2022-07-22 00:44:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-22 00:44:23,853 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2022-07-22 00:44:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:23,854 INFO L225 Difference]: With dead ends: 314 [2022-07-22 00:44:23,854 INFO L226 Difference]: Without dead ends: 313 [2022-07-22 00:44:23,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=501, Invalid=6639, Unknown=0, NotChecked=0, Total=7140 [2022-07-22 00:44:23,856 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:23,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 624 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 00:44:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-22 00:44:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 207. [2022-07-22 00:44:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 164 states have internal predecessors, (172), 9 states have call successors, (9), 6 states have call predecessors, (9), 32 states have return successors, (47), 36 states have call predecessors, (47), 7 states have call successors, (47) [2022-07-22 00:44:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2022-07-22 00:44:23,864 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 139 [2022-07-22 00:44:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:23,865 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2022-07-22 00:44:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 00:44:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2022-07-22 00:44:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 00:44:23,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:23,866 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 11, 10, 10, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:23,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 00:44:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:24,083 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2054517474, now seen corresponding path program 5 times [2022-07-22 00:44:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241901515] [2022-07-22 00:44:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:44:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 00:44:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 6 proven. 486 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-22 00:44:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:44:24,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241901515] [2022-07-22 00:44:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241901515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:24,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499566356] [2022-07-22 00:44:24,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:44:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:44:24,596 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) [2022-07-22 00:44:24,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 00:44:24,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-22 00:44:24,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:44:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 00:44:24,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:44:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 145 proven. 341 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-22 00:44:25,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:40,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499566356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:40,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:40,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 39 [2022-07-22 00:44:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054463666] [2022-07-22 00:44:40,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:40,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 00:44:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 00:44:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1795, Unknown=6, NotChecked=0, Total=1980 [2022-07-22 00:44:40,363 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-22 00:44:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:43,401 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-07-22 00:44:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-22 00:44:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) Word has length 136 [2022-07-22 00:44:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:43,403 INFO L225 Difference]: With dead ends: 270 [2022-07-22 00:44:43,403 INFO L226 Difference]: Without dead ends: 263 [2022-07-22 00:44:43,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=998, Invalid=9096, Unknown=6, NotChecked=0, Total=10100 [2022-07-22 00:44:43,404 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 214 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:43,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 646 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 00:44:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-22 00:44:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2022-07-22 00:44:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 6 states have call successors, (6), 4 states have call predecessors, (6), 24 states have return successors, (38), 27 states have call predecessors, (38), 5 states have call successors, (38) [2022-07-22 00:44:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2022-07-22 00:44:43,411 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 136 [2022-07-22 00:44:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:43,411 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2022-07-22 00:44:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-22 00:44:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2022-07-22 00:44:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 00:44:43,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:43,413 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:43,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-22 00:44:43,629 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,SelfDestructingSolverStorable21 [2022-07-22 00:44:43,629 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -333411757, now seen corresponding path program 8 times [2022-07-22 00:44:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966453686] [2022-07-22 00:44:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 00:44:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-22 00:44:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:44:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966453686] [2022-07-22 00:44:44,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966453686] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:44,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110659294] [2022-07-22 00:44:44,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:44:44,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:44:44,364 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) [2022-07-22 00:44:44,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 00:44:44,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:44:44,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:44:44,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-22 00:44:44,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:44:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-22 00:44:45,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110659294] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:48,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:48,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-22 00:44:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34085561] [2022-07-22 00:44:48,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 00:44:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 00:44:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 00:44:48,988 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 00:44:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:51,834 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2022-07-22 00:44:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-22 00:44:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) Word has length 162 [2022-07-22 00:44:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:51,840 INFO L225 Difference]: With dead ends: 250 [2022-07-22 00:44:51,841 INFO L226 Difference]: Without dead ends: 249 [2022-07-22 00:44:51,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=524, Invalid=7486, Unknown=0, NotChecked=0, Total=8010 [2022-07-22 00:44:51,842 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 201 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:51,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 815 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 00:44:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-22 00:44:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2022-07-22 00:44:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (40), 28 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-22 00:44:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2022-07-22 00:44:51,848 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 162 [2022-07-22 00:44:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:51,848 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-07-22 00:44:51,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 00:44:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2022-07-22 00:44:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 00:44:51,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:51,849 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:51,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 00:44:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:52,061 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1275355944, now seen corresponding path program 6 times [2022-07-22 00:44:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:52,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071571013] [2022-07-22 00:44:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:44:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:44:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 2 proven. 436 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-22 00:44:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:44:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071571013] [2022-07-22 00:44:52,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071571013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176209154] [2022-07-22 00:44:52,618 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 00:44:52,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:52,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:44:52,619 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) [2022-07-22 00:44:52,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 00:44:52,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-07-22 00:44:52,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:44:52,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 00:44:52,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:44:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 141 proven. 291 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-22 00:44:53,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:55,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176209154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:44:55,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:44:55,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-07-22 00:44:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098027063] [2022-07-22 00:44:55,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:55,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 00:44:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 00:44:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 00:44:55,461 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-22 00:44:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:44:58,942 INFO L93 Difference]: Finished difference Result 288 states and 311 transitions. [2022-07-22 00:44:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-22 00:44:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 135 [2022-07-22 00:44:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:44:58,943 INFO L225 Difference]: With dead ends: 288 [2022-07-22 00:44:58,943 INFO L226 Difference]: Without dead ends: 283 [2022-07-22 00:44:58,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=920, Invalid=10422, Unknown=0, NotChecked=0, Total=11342 [2022-07-22 00:44:58,945 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 234 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 00:44:58,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 762 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 00:44:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-22 00:44:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 164. [2022-07-22 00:44:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 26 states have return successors, (41), 29 states have call predecessors, (41), 5 states have call successors, (41) [2022-07-22 00:44:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2022-07-22 00:44:58,955 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 135 [2022-07-22 00:44:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:44:58,955 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2022-07-22 00:44:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-22 00:44:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2022-07-22 00:44:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 00:44:58,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:44:58,956 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:44:58,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 00:44:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:44:59,167 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:44:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:44:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1249721811, now seen corresponding path program 9 times [2022-07-22 00:44:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:44:59,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404867300] [2022-07-22 00:44:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:44:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:44:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:44:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:44:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:44:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-22 00:45:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:00,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404867300] [2022-07-22 00:45:00,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404867300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:00,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897361776] [2022-07-22 00:45:00,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:45:00,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:00,042 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) [2022-07-22 00:45:00,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 00:45:00,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-22 00:45:00,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:45:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-22 00:45:00,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-22 00:45:01,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:05,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897361776] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:05,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:05,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-22 00:45:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699366210] [2022-07-22 00:45:05,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 00:45:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 00:45:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 00:45:05,656 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 00:45:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:08,788 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2022-07-22 00:45:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-22 00:45:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) Word has length 161 [2022-07-22 00:45:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:08,790 INFO L225 Difference]: With dead ends: 265 [2022-07-22 00:45:08,790 INFO L226 Difference]: Without dead ends: 264 [2022-07-22 00:45:08,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=561, Invalid=8559, Unknown=0, NotChecked=0, Total=9120 [2022-07-22 00:45:08,791 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 219 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:08,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 830 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 00:45:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-22 00:45:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 169. [2022-07-22 00:45:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 4 states have call predecessors, (6), 27 states have return successors, (43), 30 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-22 00:45:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2022-07-22 00:45:08,802 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 161 [2022-07-22 00:45:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:08,802 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2022-07-22 00:45:08,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 00:45:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2022-07-22 00:45:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 00:45:08,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:08,804 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 13, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:45:08,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 00:45:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:09,025 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:45:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash -160848100, now seen corresponding path program 7 times [2022-07-22 00:45:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:09,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283890754] [2022-07-22 00:45:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:45:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 00:45:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-22 00:45:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283890754] [2022-07-22 00:45:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283890754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508452513] [2022-07-22 00:45:09,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 00:45:09,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:09,672 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) [2022-07-22 00:45:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 00:45:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:10,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 00:45:10,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-22 00:45:10,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:13,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508452513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:13,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:13,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2022-07-22 00:45:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492127918] [2022-07-22 00:45:13,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 00:45:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 00:45:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 00:45:13,079 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-22 00:45:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:15,990 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2022-07-22 00:45:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-22 00:45:15,992 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) Word has length 158 [2022-07-22 00:45:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:15,993 INFO L225 Difference]: With dead ends: 302 [2022-07-22 00:45:15,993 INFO L226 Difference]: Without dead ends: 299 [2022-07-22 00:45:15,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=657, Invalid=7533, Unknown=0, NotChecked=0, Total=8190 [2022-07-22 00:45:15,994 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 206 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:15,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 837 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 00:45:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-22 00:45:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2022-07-22 00:45:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 196 states have internal predecessors, (204), 9 states have call successors, (9), 6 states have call predecessors, (9), 40 states have return successors, (57), 44 states have call predecessors, (57), 7 states have call successors, (57) [2022-07-22 00:45:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2022-07-22 00:45:16,003 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 158 [2022-07-22 00:45:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:16,004 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2022-07-22 00:45:16,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-22 00:45:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2022-07-22 00:45:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-22 00:45:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:16,006 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:45:16,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 00:45:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 00:45:16,215 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:45:16,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash -286686319, now seen corresponding path program 10 times [2022-07-22 00:45:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:16,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498118860] [2022-07-22 00:45:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 00:45:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-22 00:45:17,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498118860] [2022-07-22 00:45:17,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498118860] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051760143] [2022-07-22 00:45:17,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:45:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:17,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:17,149 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) [2022-07-22 00:45:17,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 00:45:17,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:45:17,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:45:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-22 00:45:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-22 00:45:18,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:23,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051760143] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:23,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:23,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-22 00:45:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442093781] [2022-07-22 00:45:23,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-22 00:45:23,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-22 00:45:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 00:45:23,485 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 00:45:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:26,960 INFO L93 Difference]: Finished difference Result 374 states and 410 transitions. [2022-07-22 00:45:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-22 00:45:26,960 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) Word has length 184 [2022-07-22 00:45:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:26,961 INFO L225 Difference]: With dead ends: 374 [2022-07-22 00:45:26,961 INFO L226 Difference]: Without dead ends: 373 [2022-07-22 00:45:26,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 189 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=612, Invalid=9894, Unknown=0, NotChecked=0, Total=10506 [2022-07-22 00:45:26,970 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 331 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:26,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 989 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 00:45:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-22 00:45:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 252. [2022-07-22 00:45:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 200 states have internal predecessors, (208), 9 states have call successors, (9), 6 states have call predecessors, (9), 41 states have return successors, (59), 45 states have call predecessors, (59), 7 states have call successors, (59) [2022-07-22 00:45:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2022-07-22 00:45:26,979 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 184 [2022-07-22 00:45:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:26,979 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2022-07-22 00:45:26,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 00:45:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2022-07-22 00:45:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 00:45:26,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:26,981 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 13, 13, 13, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:45:26,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 00:45:27,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 00:45:27,190 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:45:27,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1765819050, now seen corresponding path program 8 times [2022-07-22 00:45:27,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:27,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946432516] [2022-07-22 00:45:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:45:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:45:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 2 proven. 583 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-22 00:45:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946432516] [2022-07-22 00:45:27,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946432516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727126856] [2022-07-22 00:45:27,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:45:27,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:27,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:27,876 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) [2022-07-22 00:45:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 00:45:28,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:45:28,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:45:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 00:45:28,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 169 proven. 410 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-22 00:45:29,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:31,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727126856] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:31,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:31,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 48 [2022-07-22 00:45:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624681553] [2022-07-22 00:45:31,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 00:45:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 00:45:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2396, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 00:45:31,943 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-22 00:45:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:36,419 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2022-07-22 00:45:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-22 00:45:36,420 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) Word has length 157 [2022-07-22 00:45:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:36,421 INFO L225 Difference]: With dead ends: 330 [2022-07-22 00:45:36,422 INFO L226 Difference]: Without dead ends: 323 [2022-07-22 00:45:36,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1092, Invalid=14408, Unknown=0, NotChecked=0, Total=15500 [2022-07-22 00:45:36,423 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 361 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:36,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 974 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 00:45:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-22 00:45:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 184. [2022-07-22 00:45:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 6 states have call successors, (6), 4 states have call predecessors, (6), 30 states have return successors, (47), 33 states have call predecessors, (47), 5 states have call successors, (47) [2022-07-22 00:45:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2022-07-22 00:45:36,429 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 157 [2022-07-22 00:45:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:36,429 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2022-07-22 00:45:36,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-22 00:45:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2022-07-22 00:45:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 00:45:36,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:36,430 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:45:36,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 00:45:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 00:45:36,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:45:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1506724331, now seen corresponding path program 11 times [2022-07-22 00:45:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:36,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046753359] [2022-07-22 00:45:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:45:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-22 00:45:37,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:37,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046753359] [2022-07-22 00:45:37,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046753359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:37,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807426088] [2022-07-22 00:45:37,640 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:45:37,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:37,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:37,641 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) [2022-07-22 00:45:37,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 00:45:38,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-22 00:45:38,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:45:38,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-22 00:45:38,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-22 00:45:39,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:45,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807426088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:45,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:45,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-22 00:45:45,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131021199] [2022-07-22 00:45:45,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-22 00:45:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-22 00:45:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 00:45:45,106 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 00:45:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:48,927 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2022-07-22 00:45:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-22 00:45:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) Word has length 183 [2022-07-22 00:45:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:48,929 INFO L225 Difference]: With dead ends: 295 [2022-07-22 00:45:48,929 INFO L226 Difference]: Without dead ends: 294 [2022-07-22 00:45:48,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 184 SyntacticMatches, 15 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=635, Invalid=10921, Unknown=0, NotChecked=0, Total=11556 [2022-07-22 00:45:48,931 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 244 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:48,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1060 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 00:45:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-22 00:45:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 189. [2022-07-22 00:45:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 6 states have call successors, (6), 4 states have call predecessors, (6), 31 states have return successors, (49), 34 states have call predecessors, (49), 5 states have call successors, (49) [2022-07-22 00:45:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2022-07-22 00:45:48,938 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 183 [2022-07-22 00:45:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:48,939 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2022-07-22 00:45:48,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 00:45:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2022-07-22 00:45:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-22 00:45:48,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:48,941 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 15, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:45:48,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 00:45:49,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:49,150 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:45:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash -160493286, now seen corresponding path program 9 times [2022-07-22 00:45:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:49,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096451624] [2022-07-22 00:45:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:49,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:45:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 00:45:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:45:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 6 proven. 828 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-07-22 00:45:49,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:49,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096451624] [2022-07-22 00:45:49,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096451624] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:49,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315837271] [2022-07-22 00:45:49,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:45:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:45:49,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:49,928 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) [2022-07-22 00:45:49,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 00:45:50,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-07-22 00:45:50,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:45:50,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-22 00:45:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:45:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 201 proven. 627 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-07-22 00:45:51,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:45:54,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315837271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:45:54,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:45:54,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 51 [2022-07-22 00:45:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939376866] [2022-07-22 00:45:54,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:45:54,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-22 00:45:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-22 00:45:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2698, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 00:45:54,866 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-22 00:46:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:46:00,012 INFO L93 Difference]: Finished difference Result 348 states and 374 transitions. [2022-07-22 00:46:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-22 00:46:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) Word has length 180 [2022-07-22 00:46:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:46:00,014 INFO L225 Difference]: With dead ends: 348 [2022-07-22 00:46:00,014 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 00:46:00,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 11 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1178, Invalid=16644, Unknown=0, NotChecked=0, Total=17822 [2022-07-22 00:46:00,016 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 341 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 00:46:00,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1093 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 00:46:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 00:46:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 194. [2022-07-22 00:46:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 32 states have return successors, (50), 35 states have call predecessors, (50), 5 states have call successors, (50) [2022-07-22 00:46:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2022-07-22 00:46:00,021 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 180 [2022-07-22 00:46:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:46:00,022 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2022-07-22 00:46:00,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-22 00:46:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2022-07-22 00:46:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-22 00:46:00,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:46:00,023 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:46:00,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-22 00:46:00,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:00,239 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:46:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:46:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1967692977, now seen corresponding path program 12 times [2022-07-22 00:46:00,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:46:00,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908320025] [2022-07-22 00:46:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:46:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:46:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:46:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:01,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-22 00:46:01,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:46:01,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908320025] [2022-07-22 00:46:01,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908320025] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:01,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759650885] [2022-07-22 00:46:01,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 00:46:01,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:46:01,306 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) [2022-07-22 00:46:01,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 00:46:01,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-07-22 00:46:01,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:46:01,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-22 00:46:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:46:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-22 00:46:03,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:46:10,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759650885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:10,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:46:10,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-22 00:46:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114078229] [2022-07-22 00:46:10,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:46:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-22 00:46:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:46:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-22 00:46:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-22 00:46:10,012 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-22 00:46:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:46:14,357 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2022-07-22 00:46:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-22 00:46:14,357 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2022-07-22 00:46:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:46:14,360 INFO L225 Difference]: With dead ends: 310 [2022-07-22 00:46:14,360 INFO L226 Difference]: Without dead ends: 309 [2022-07-22 00:46:14,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=672, Invalid=12210, Unknown=0, NotChecked=0, Total=12882 [2022-07-22 00:46:14,362 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 365 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 00:46:14,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1223 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 00:46:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-22 00:46:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 199. [2022-07-22 00:46:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (52), 36 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-22 00:46:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2022-07-22 00:46:14,386 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 194 [2022-07-22 00:46:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:46:14,386 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2022-07-22 00:46:14,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-22 00:46:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2022-07-22 00:46:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 00:46:14,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:46:14,388 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 15, 15, 15, 15, 15, 15, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:46:14,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-22 00:46:14,595 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,SelfDestructingSolverStorable30 [2022-07-22 00:46:14,595 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:46:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:46:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1100004820, now seen corresponding path program 10 times [2022-07-22 00:46:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:46:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947952827] [2022-07-22 00:46:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:46:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:46:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:46:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:46:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-22 00:46:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:46:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947952827] [2022-07-22 00:46:15,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947952827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415692943] [2022-07-22 00:46:15,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:46:15,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:15,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:46:15,439 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) [2022-07-22 00:46:15,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 00:46:15,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:46:15,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:46:15,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-22 00:46:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:46:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-22 00:46:17,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:46:21,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415692943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:21,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:46:21,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 52 [2022-07-22 00:46:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494902674] [2022-07-22 00:46:21,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:46:21,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 00:46:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:46:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 00:46:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2022-07-22 00:46:21,181 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-22 00:46:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:46:25,483 INFO L93 Difference]: Finished difference Result 362 states and 389 transitions. [2022-07-22 00:46:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-07-22 00:46:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) Word has length 179 [2022-07-22 00:46:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:46:25,485 INFO L225 Difference]: With dead ends: 362 [2022-07-22 00:46:25,485 INFO L226 Difference]: Without dead ends: 359 [2022-07-22 00:46:25,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=825, Invalid=11607, Unknown=0, NotChecked=0, Total=12432 [2022-07-22 00:46:25,486 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 254 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 5030 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 5030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 00:46:25,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1198 Invalid, 5232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 5030 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 00:46:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-22 00:46:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2022-07-22 00:46:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 233 states have (on average 1.0300429184549356) internal successors, (240), 232 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 49 states have return successors, (69), 53 states have call predecessors, (69), 7 states have call successors, (69) [2022-07-22 00:46:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 318 transitions. [2022-07-22 00:46:25,493 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 318 transitions. Word has length 179 [2022-07-22 00:46:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:46:25,494 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 318 transitions. [2022-07-22 00:46:25,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-22 00:46:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 318 transitions. [2022-07-22 00:46:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 00:46:25,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:46:25,495 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:46:25,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 00:46:25,711 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,SelfDestructingSolverStorable31 [2022-07-22 00:46:25,711 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:46:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:46:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -48529833, now seen corresponding path program 13 times [2022-07-22 00:46:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:46:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251591286] [2022-07-22 00:46:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:46:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:46:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 00:46:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:25,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-22 00:46:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:46:26,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251591286] [2022-07-22 00:46:26,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251591286] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:26,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086693274] [2022-07-22 00:46:26,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 00:46:26,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:46:26,869 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) [2022-07-22 00:46:26,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-22 00:46:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:27,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-22 00:46:27,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:46:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-22 00:46:28,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:46:36,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086693274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:36,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 00:46:36,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2022-07-22 00:46:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910568258] [2022-07-22 00:46:36,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 00:46:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-22 00:46:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:46:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-22 00:46:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2022-07-22 00:46:36,839 INFO L87 Difference]: Start difference. First operand 292 states and 318 transitions. Second operand has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-22 00:46:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:46:41,870 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2022-07-22 00:46:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-22 00:46:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) Word has length 205 [2022-07-22 00:46:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:46:41,872 INFO L225 Difference]: With dead ends: 434 [2022-07-22 00:46:41,872 INFO L226 Difference]: Without dead ends: 433 [2022-07-22 00:46:41,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 206 SyntacticMatches, 17 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=723, Invalid=13797, Unknown=0, NotChecked=0, Total=14520 [2022-07-22 00:46:41,873 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 268 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 5737 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 5890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 5737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 00:46:41,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1386 Invalid, 5890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 5737 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 00:46:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-22 00:46:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 297. [2022-07-22 00:46:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.029535864978903) internal successors, (244), 236 states have internal predecessors, (244), 9 states have call successors, (9), 6 states have call predecessors, (9), 50 states have return successors, (71), 54 states have call predecessors, (71), 7 states have call successors, (71) [2022-07-22 00:46:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 324 transitions. [2022-07-22 00:46:41,881 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 324 transitions. Word has length 205 [2022-07-22 00:46:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:46:41,882 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 324 transitions. [2022-07-22 00:46:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-22 00:46:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 324 transitions. [2022-07-22 00:46:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 00:46:41,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:46:41,883 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 16, 16, 16, 16, 16, 16, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:46:41,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-22 00:46:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:42,099 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:46:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:46:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1063621370, now seen corresponding path program 11 times [2022-07-22 00:46:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:46:42,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144804028] [2022-07-22 00:46:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:46:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:46:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 00:46:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 00:46:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 00:46:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:46:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 2 proven. 841 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-22 00:46:43,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:46:43,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144804028] [2022-07-22 00:46:43,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144804028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:46:43,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982973879] [2022-07-22 00:46:43,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:46:43,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:46:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:46:43,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:46:43,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-22 00:46:43,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-07-22 00:46:43,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:46:43,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-22 00:46:43,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:46:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 211 proven. 626 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2022-07-22 00:46:45,051 INFO L328 TraceCheckSpWp]: Computing backward predicates...