./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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/loop-zilu/benchmark36_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:27:38,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:27:38,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:27:38,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:27:38,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:27:38,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:27:38,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:27:38,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:27:38,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:27:38,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:27:38,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:27:38,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:27:38,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:27:38,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:27:38,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:27:38,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:27:38,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:27:38,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:27:38,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:27:38,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:27:38,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:27:38,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:27:38,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:27:38,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:27:38,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:27:38,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:27:38,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:27:38,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:27:38,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:27:38,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:27:38,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:27:38,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:27:38,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:27:38,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:27:38,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:27:38,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:27:38,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:27:38,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:27:38,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:27:38,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:27:38,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:27:38,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:27:38,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:27:38,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:27:38,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:27:38,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:27:38,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:27:38,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:27:38,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:27:38,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:27:38,401 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:27:38,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:27:38,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:27:38,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:27:38,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:27:38,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:27:38,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:27:38,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:27:38,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:27:38,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:27:38,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:27:38,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:27:38,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:27:38,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:27:38,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:27:38,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:27:38,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a [2021-12-19 15:27:38,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:27:38,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:27:38,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:27:38,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:27:38,647 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:27:38,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-12-19 15:27:38,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f92f254/b4fb17c9af1946e48404cfd782d650ce/FLAG7f301bba2 [2021-12-19 15:27:39,122 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:27:39,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-12-19 15:27:39,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f92f254/b4fb17c9af1946e48404cfd782d650ce/FLAG7f301bba2 [2021-12-19 15:27:39,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f92f254/b4fb17c9af1946e48404cfd782d650ce [2021-12-19 15:27:39,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:27:39,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:27:39,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:27:39,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:27:39,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:27:39,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a1d0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39, skipping insertion in model container [2021-12-19 15:27:39,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:27:39,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:27:39,674 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/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-12-19 15:27:39,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:27:39,686 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:27:39,696 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/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-12-19 15:27:39,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:27:39,708 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:27:39,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39 WrapperNode [2021-12-19 15:27:39,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:27:39,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:27:39,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:27:39,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:27:39,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,733 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-12-19 15:27:39,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:27:39,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:27:39,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:27:39,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:27:39,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:27:39,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:27:39,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:27:39,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:27:39,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (1/1) ... [2021-12-19 15:27:39,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:27:39,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:39,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 15:27:39,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 15:27:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:27:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:27:39,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:27:39,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:27:39,880 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:27:39,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:27:39,964 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:27:39,968 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:27:39,969 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 15:27:39,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:27:39 BoogieIcfgContainer [2021-12-19 15:27:39,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:27:39,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:27:39,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:27:39,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:27:39,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:27:39" (1/3) ... [2021-12-19 15:27:39,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219b88df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:27:39, skipping insertion in model container [2021-12-19 15:27:39,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:27:39" (2/3) ... [2021-12-19 15:27:39,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219b88df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:27:39, skipping insertion in model container [2021-12-19 15:27:39,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:27:39" (3/3) ... [2021-12-19 15:27:39,977 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark36_conjunctive.i [2021-12-19 15:27:39,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:27:39,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-19 15:27:40,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:27:40,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-19 15:27:40,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-19 15:27:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 15:27:40,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:40,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 15:27:40,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-19 15:27:40,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:40,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617536382] [2021-12-19 15:27:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:40,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617536382] [2021-12-19 15:27:40,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617536382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:27:40,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:27:40,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:27:40,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97820997] [2021-12-19 15:27:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:27:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:27:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:27:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:27:40,279 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:40,351 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-19 15:27:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:27:40,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-19 15:27:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:40,372 INFO L225 Difference]: With dead ends: 35 [2021-12-19 15:27:40,373 INFO L226 Difference]: Without dead ends: 16 [2021-12-19 15:27:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:27:40,378 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:40,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-19 15:27:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-19 15:27:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-19 15:27:40,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-12-19 15:27:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:40,401 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-19 15:27:40,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-19 15:27:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:27:40,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:40,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:27:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:27:40,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-19 15:27:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:40,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922882717] [2021-12-19 15:27:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:40,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922882717] [2021-12-19 15:27:40,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922882717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:27:40,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:27:40,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:27:40,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470975774] [2021-12-19 15:27:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:27:40,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:27:40,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:27:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:27:40,440 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:40,458 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-19 15:27:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:27:40,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-19 15:27:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:40,460 INFO L225 Difference]: With dead ends: 14 [2021-12-19 15:27:40,460 INFO L226 Difference]: Without dead ends: 13 [2021-12-19 15:27:40,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:27:40,462 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:40,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-19 15:27:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-19 15:27:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-19 15:27:40,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-12-19 15:27:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-19 15:27:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-19 15:27:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 15:27:40,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:40,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:27:40,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:27:40,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-19 15:27:40,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:40,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202271487] [2021-12-19 15:27:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:40,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202271487] [2021-12-19 15:27:40,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202271487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:27:40,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:27:40,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:27:40,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169443622] [2021-12-19 15:27:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:27:40,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:27:40,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:27:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:27:40,515 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:40,551 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-12-19 15:27:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:27:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-19 15:27:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:40,552 INFO L225 Difference]: With dead ends: 18 [2021-12-19 15:27:40,552 INFO L226 Difference]: Without dead ends: 17 [2021-12-19 15:27:40,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:27:40,554 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:40,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-19 15:27:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-19 15:27:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-19 15:27:40,561 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-12-19 15:27:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:40,562 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-19 15:27:40,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-19 15:27:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 15:27:40,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:40,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:27:40,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 15:27:40,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-19 15:27:40,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:40,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217874030] [2021-12-19 15:27:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:40,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217874030] [2021-12-19 15:27:40,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217874030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:27:40,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:27:40,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:27:40,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995452799] [2021-12-19 15:27:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:27:40,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:27:40,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:27:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:27:40,624 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:40,638 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-12-19 15:27:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:27:40,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-19 15:27:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:40,639 INFO L225 Difference]: With dead ends: 15 [2021-12-19 15:27:40,639 INFO L226 Difference]: Without dead ends: 14 [2021-12-19 15:27:40,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:27:40,641 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:40,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-19 15:27:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-19 15:27:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-19 15:27:40,644 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-12-19 15:27:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:40,645 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-19 15:27:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-19 15:27:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 15:27:40,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:40,646 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:27:40,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 15:27:40,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-19 15:27:40,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:40,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891688720] [2021-12-19 15:27:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:40,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891688720] [2021-12-19 15:27:40,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891688720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:40,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713883234] [2021-12-19 15:27:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:40,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:40,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:27:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:40,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:27:40,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713883234] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:40,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:40,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-19 15:27:40,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296966451] [2021-12-19 15:27:40,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:40,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:27:40,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:27:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:27:40,923 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:40,993 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-19 15:27:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:27:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-19 15:27:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:40,994 INFO L225 Difference]: With dead ends: 31 [2021-12-19 15:27:40,994 INFO L226 Difference]: Without dead ends: 30 [2021-12-19 15:27:40,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:27:40,996 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:40,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-19 15:27:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-12-19 15:27:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-19 15:27:41,002 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-12-19 15:27:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-19 15:27:41,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-19 15:27:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 15:27:41,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:41,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 15:27:41,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:41,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:41,220 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-12-19 15:27:41,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:41,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225118451] [2021-12-19 15:27:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:41,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:41,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:41,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225118451] [2021-12-19 15:27:41,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225118451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755523191] [2021-12-19 15:27:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:41,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:41,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:41,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:27:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:27:41,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:41,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:41,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755523191] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:41,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:41,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-19 15:27:41,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161219757] [2021-12-19 15:27:41,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:41,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:27:41,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:27:41,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:27:41,409 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:41,465 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-19 15:27:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:27:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-19 15:27:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:41,467 INFO L225 Difference]: With dead ends: 31 [2021-12-19 15:27:41,468 INFO L226 Difference]: Without dead ends: 30 [2021-12-19 15:27:41,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:27:41,474 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:41,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-19 15:27:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-12-19 15:27:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-12-19 15:27:41,479 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2021-12-19 15:27:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:41,479 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-12-19 15:27:41,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-12-19 15:27:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-19 15:27:41,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:41,481 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-19 15:27:41,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:41,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-19 15:27:41,688 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-12-19 15:27:41,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:41,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287465914] [2021-12-19 15:27:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:41,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:41,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:41,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287465914] [2021-12-19 15:27:41,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287465914] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:41,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533709785] [2021-12-19 15:27:41,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:27:41,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:41,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:41,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:27:41,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:27:41,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:41,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:27:41,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:41,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:42,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533709785] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:42,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:42,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-19 15:27:42,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679258475] [2021-12-19 15:27:42,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:42,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-19 15:27:42,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-19 15:27:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:27:42,083 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:42,235 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-12-19 15:27:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-19 15:27:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-19 15:27:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:42,240 INFO L225 Difference]: With dead ends: 64 [2021-12-19 15:27:42,241 INFO L226 Difference]: Without dead ends: 63 [2021-12-19 15:27:42,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:27:42,244 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:42,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 54 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-19 15:27:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-12-19 15:27:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-12-19 15:27:42,259 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 25 [2021-12-19 15:27:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:42,260 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-12-19 15:27:42,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-12-19 15:27:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 15:27:42,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:42,261 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-19 15:27:42,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:42,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:42,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-12-19 15:27:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127395158] [2021-12-19 15:27:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:42,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:42,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127395158] [2021-12-19 15:27:42,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127395158] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553922683] [2021-12-19 15:27:42,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:27:42,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:42,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:42,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:27:42,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:27:42,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-19 15:27:42,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:42,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:42,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553922683] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:42,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:42,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-19 15:27:42,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781641685] [2021-12-19 15:27:42,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:42,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-19 15:27:42,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-19 15:27:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:27:42,879 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:43,025 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-12-19 15:27:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-19 15:27:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-19 15:27:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:43,027 INFO L225 Difference]: With dead ends: 61 [2021-12-19 15:27:43,028 INFO L226 Difference]: Without dead ends: 60 [2021-12-19 15:27:43,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:27:43,029 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 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 [2021-12-19 15:27:43,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:27:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-19 15:27:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-12-19 15:27:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-12-19 15:27:43,046 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 27 [2021-12-19 15:27:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:43,046 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-12-19 15:27:43,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-12-19 15:27:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-19 15:27:43,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:43,050 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-19 15:27:43,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:43,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:43,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-12-19 15:27:43,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562249876] [2021-12-19 15:27:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:43,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:43,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562249876] [2021-12-19 15:27:43,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562249876] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327366981] [2021-12-19 15:27:43,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:27:43,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:43,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:43,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:43,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:27:43,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 15:27:43,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:43,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-19 15:27:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:43,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:44,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327366981] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:44,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:44,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-12-19 15:27:44,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160550194] [2021-12-19 15:27:44,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:44,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 15:27:44,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 15:27:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-19 15:27:44,275 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:44,716 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-12-19 15:27:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-19 15:27:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-19 15:27:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:44,718 INFO L225 Difference]: With dead ends: 130 [2021-12-19 15:27:44,718 INFO L226 Difference]: Without dead ends: 129 [2021-12-19 15:27:44,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-12-19 15:27:44,721 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:44,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 85 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:27:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-19 15:27:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2021-12-19 15:27:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 116 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-12-19 15:27:44,728 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 55 [2021-12-19 15:27:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:44,729 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-12-19 15:27:44,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-12-19 15:27:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-19 15:27:44,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:44,730 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-19 15:27:44,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:44,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:44,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 3 times [2021-12-19 15:27:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:44,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616468306] [2021-12-19 15:27:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:44,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:45,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:45,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616468306] [2021-12-19 15:27:45,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616468306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:45,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398701657] [2021-12-19 15:27:45,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:27:45,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:45,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:45,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:45,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:27:45,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 15:27:45,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-19 15:27:45,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:45,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:45,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398701657] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:45,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:45,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-12-19 15:27:45,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871147135] [2021-12-19 15:27:45,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:45,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 15:27:45,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 15:27:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-19 15:27:45,862 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:46,258 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-12-19 15:27:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-19 15:27:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-19 15:27:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:46,260 INFO L225 Difference]: With dead ends: 121 [2021-12-19 15:27:46,260 INFO L226 Difference]: Without dead ends: 120 [2021-12-19 15:27:46,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-12-19 15:27:46,262 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 128 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:46,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 94 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:27:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-19 15:27:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-12-19 15:27:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-12-19 15:27:46,269 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 57 [2021-12-19 15:27:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:46,269 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-12-19 15:27:46,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-12-19 15:27:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-19 15:27:46,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:46,271 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-19 15:27:46,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:46,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:46,494 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-12-19 15:27:46,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:46,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129125194] [2021-12-19 15:27:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:46,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:47,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:47,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129125194] [2021-12-19 15:27:47,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129125194] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:47,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712726768] [2021-12-19 15:27:47,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:27:47,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:47,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:47,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:27:47,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:27:47,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:27:47,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:47,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-19 15:27:47,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:47,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:49,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712726768] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:49,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:49,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-12-19 15:27:49,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094082448] [2021-12-19 15:27:49,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 15:27:49,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 15:27:49,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-19 15:27:49,135 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:50,427 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2021-12-19 15:27:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-19 15:27:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-19 15:27:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:50,429 INFO L225 Difference]: With dead ends: 262 [2021-12-19 15:27:50,429 INFO L226 Difference]: Without dead ends: 261 [2021-12-19 15:27:50,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-12-19 15:27:50,432 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 519 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:50,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 156 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:27:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-19 15:27:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2021-12-19 15:27:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.1063829787234043) internal successors, (260), 236 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2021-12-19 15:27:50,443 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 115 [2021-12-19 15:27:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:50,444 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2021-12-19 15:27:50,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2021-12-19 15:27:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-19 15:27:50,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:50,447 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-19 15:27:50,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:50,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:50,656 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 4 times [2021-12-19 15:27:50,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:50,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167616031] [2021-12-19 15:27:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:50,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:51,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:51,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167616031] [2021-12-19 15:27:51,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167616031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748433484] [2021-12-19 15:27:51,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:27:51,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:51,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:51,337 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) [2021-12-19 15:27:51,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:27:51,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:27:51,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-19 15:27:51,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:51,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:27:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:53,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748433484] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:27:53,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:27:53,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-12-19 15:27:53,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975568874] [2021-12-19 15:27:53,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:27:53,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 15:27:53,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:27:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 15:27:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-19 15:27:53,232 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:27:54,393 INFO L93 Difference]: Finished difference Result 241 states and 264 transitions. [2021-12-19 15:27:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-19 15:27:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-19 15:27:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:27:54,395 INFO L225 Difference]: With dead ends: 241 [2021-12-19 15:27:54,395 INFO L226 Difference]: Without dead ends: 240 [2021-12-19 15:27:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-12-19 15:27:54,398 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 345 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:27:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 141 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:27:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-19 15:27:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-12-19 15:27:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-12-19 15:27:54,405 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 117 [2021-12-19 15:27:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:27:54,406 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-12-19 15:27:54,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:27:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-12-19 15:27:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-19 15:27:54,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:27:54,408 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-19 15:27:54,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 15:27:54,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 15:27:54,630 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:27:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:27:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-12-19 15:27:54,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:27:54,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432597739] [2021-12-19 15:27:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:27:54,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:27:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:27:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:57,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:27:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432597739] [2021-12-19 15:27:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432597739] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:27:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105429698] [2021-12-19 15:27:57,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:27:57,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:27:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:27:57,012 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) [2021-12-19 15:27:57,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 15:27:57,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 15:27:57,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:27:57,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-19 15:27:57,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:27:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:27:57,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:28:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:03,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105429698] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:28:03,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:28:03,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-12-19 15:28:03,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052924506] [2021-12-19 15:28:03,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:28:03,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-19 15:28:03,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:28:03,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-19 15:28:03,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-19 15:28:03,356 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:28:08,106 INFO L93 Difference]: Finished difference Result 526 states and 573 transitions. [2021-12-19 15:28:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-19 15:28:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-12-19 15:28:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:28:08,109 INFO L225 Difference]: With dead ends: 526 [2021-12-19 15:28:08,109 INFO L226 Difference]: Without dead ends: 525 [2021-12-19 15:28:08,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2021-12-19 15:28:08,115 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1188 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:28:08,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 274 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:28:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-19 15:28:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 477. [2021-12-19 15:28:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1031578947368421) internal successors, (524), 476 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 524 transitions. [2021-12-19 15:28:08,127 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 524 transitions. Word has length 235 [2021-12-19 15:28:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:28:08,127 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 524 transitions. [2021-12-19 15:28:08,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 524 transitions. [2021-12-19 15:28:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-19 15:28:08,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:28:08,130 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-19 15:28:08,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 15:28:08,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-19 15:28:08,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:28:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:28:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 5 times [2021-12-19 15:28:08,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:28:08,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045825423] [2021-12-19 15:28:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:28:08,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:28:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:28:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:10,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:28:10,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045825423] [2021-12-19 15:28:10,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045825423] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:28:10,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871420664] [2021-12-19 15:28:10,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:28:10,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:28:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:28:10,646 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) [2021-12-19 15:28:10,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 15:28:10,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 15:28:10,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:28:10,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-19 15:28:10,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:28:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:11,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:28:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:16,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871420664] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:28:16,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:28:16,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-12-19 15:28:16,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966813273] [2021-12-19 15:28:16,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:28:16,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-19 15:28:16,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:28:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-19 15:28:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-19 15:28:16,911 INFO L87 Difference]: Start difference. First operand 477 states and 524 transitions. Second operand has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:28:21,578 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2021-12-19 15:28:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-19 15:28:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-12-19 15:28:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:28:21,580 INFO L225 Difference]: With dead ends: 481 [2021-12-19 15:28:21,580 INFO L226 Difference]: Without dead ends: 480 [2021-12-19 15:28:21,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2021-12-19 15:28:21,585 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1107 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:28:21,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 243 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:28:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-19 15:28:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-12-19 15:28:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 478 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2021-12-19 15:28:21,594 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 237 [2021-12-19 15:28:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:28:21,595 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2021-12-19 15:28:21,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:28:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2021-12-19 15:28:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-12-19 15:28:21,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:28:21,602 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-12-19 15:28:21,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 15:28:21,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-19 15:28:21,823 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:28:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:28:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2021-12-19 15:28:21,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:28:21,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235004144] [2021-12-19 15:28:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:28:21,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:28:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:28:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:30,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:28:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235004144] [2021-12-19 15:28:30,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235004144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:28:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417153542] [2021-12-19 15:28:30,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:28:30,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:28:30,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:28:30,508 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) [2021-12-19 15:28:30,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 15:28:31,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 15:28:31,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:28:31,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-19 15:28:31,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:28:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:32,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:28:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:53,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417153542] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:28:53,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:28:53,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-12-19 15:28:53,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039721351] [2021-12-19 15:28:53,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:28:53,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-19 15:28:53,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:28:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-19 15:28:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-19 15:28:53,654 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:29:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:29:16,232 INFO L93 Difference]: Finished difference Result 1054 states and 1149 transitions. [2021-12-19 15:29:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-12-19 15:29:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2021-12-19 15:29:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:29:16,236 INFO L225 Difference]: With dead ends: 1054 [2021-12-19 15:29:16,236 INFO L226 Difference]: Without dead ends: 1053 [2021-12-19 15:29:16,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71254 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=91296, Invalid=235316, Unknown=0, NotChecked=0, Total=326612 [2021-12-19 15:29:16,253 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3212 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3212 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:29:16,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3212 Valid, 517 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 15:29:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-12-19 15:29:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 957. [2021-12-19 15:29:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 955 states have (on average 1.1015706806282723) internal successors, (1052), 956 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:29:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1052 transitions. [2021-12-19 15:29:16,271 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1052 transitions. Word has length 475 [2021-12-19 15:29:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:29:16,272 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1052 transitions. [2021-12-19 15:29:16,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:29:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1052 transitions. [2021-12-19 15:29:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-12-19 15:29:16,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:29:16,280 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2021-12-19 15:29:16,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 15:29:16,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-19 15:29:16,495 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:29:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:29:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1616701657, now seen corresponding path program 6 times [2021-12-19 15:29:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:29:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203836252] [2021-12-19 15:29:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:29:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:29:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:29:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:29:25,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:29:25,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203836252] [2021-12-19 15:29:25,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203836252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:29:25,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107178454] [2021-12-19 15:29:25,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:29:25,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:29:25,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:29:25,416 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) [2021-12-19 15:29:25,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 15:29:26,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 15:29:26,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:29:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-19 15:29:26,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:29:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:29:27,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:29:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:29:49,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107178454] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:29:49,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:29:49,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-12-19 15:29:49,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159892941] [2021-12-19 15:29:49,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:29:49,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-19 15:29:49,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:29:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-19 15:29:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-19 15:29:49,041 INFO L87 Difference]: Start difference. First operand 957 states and 1052 transitions. Second operand has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:30:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:30:11,653 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2021-12-19 15:30:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-12-19 15:30:11,654 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2021-12-19 15:30:11,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:30:11,657 INFO L225 Difference]: With dead ends: 961 [2021-12-19 15:30:11,657 INFO L226 Difference]: Without dead ends: 960 [2021-12-19 15:30:11,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71254 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=91296, Invalid=235316, Unknown=0, NotChecked=0, Total=326612 [2021-12-19 15:30:11,672 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2161 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:30:11,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 432 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 15:30:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-12-19 15:30:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 959. [2021-12-19 15:30:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 957 states have (on average 1.0020898641588296) internal successors, (959), 958 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:30:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2021-12-19 15:30:11,689 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 477 [2021-12-19 15:30:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:30:11,690 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2021-12-19 15:30:11,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:30:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2021-12-19 15:30:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2021-12-19 15:30:11,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:30:11,699 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1] [2021-12-19 15:30:11,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 15:30:11,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-19 15:30:11,919 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:30:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:30:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1814097445, now seen corresponding path program 7 times [2021-12-19 15:30:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:30:11,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167108637] [2021-12-19 15:30:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:30:11,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:30:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:30:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:30:45,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:30:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167108637] [2021-12-19 15:30:45,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167108637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:30:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373622237] [2021-12-19 15:30:45,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:30:45,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:30:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:30:45,934 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) [2021-12-19 15:30:45,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 15:30:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:30:46,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-19 15:30:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:30:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:30:47,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:32:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:32:14,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373622237] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:32:14,595 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:32:14,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 765 [2021-12-19 15:32:14,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140396376] [2021-12-19 15:32:14,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:32:14,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-19 15:32:14,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:32:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-19 15:32:14,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-19 15:32:14,642 INFO L87 Difference]: Start difference. First operand 959 states and 959 transitions. Second operand has 766 states, 765 states have (on average 2.4941176470588236) internal successors, (1908), 766 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:56,391 INFO L93 Difference]: Finished difference Result 2110 states and 2301 transitions. [2021-12-19 15:34:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 767 states. [2021-12-19 15:34:56,393 INFO L78 Accepts]: Start accepts. Automaton has has 766 states, 765 states have (on average 2.4941176470588236) internal successors, (1908), 766 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 955 [2021-12-19 15:34:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:56,400 INFO L225 Difference]: With dead ends: 2110 [2021-12-19 15:34:56,401 INFO L226 Difference]: Without dead ends: 2109 [2021-12-19 15:34:56,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2673 GetRequests, 1527 SyntacticMatches, 0 SemanticMatches, 1146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289942 ImplicationChecksByTransitivity, 177.0s TimeCoverageRelationStatistics Valid=366912, Invalid=949844, Unknown=0, NotChecked=0, Total=1316756 [2021-12-19 15:34:56,474 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 6409 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:56,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6409 Valid, 1019 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-19 15:34:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-12-19 15:34:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1917. [2021-12-19 15:34:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.1007832898172323) internal successors, (2108), 1916 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2108 transitions. [2021-12-19 15:34:56,509 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2108 transitions. Word has length 955 [2021-12-19 15:34:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:56,510 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2108 transitions. [2021-12-19 15:34:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 766 states, 765 states have (on average 2.4941176470588236) internal successors, (1908), 766 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2108 transitions. [2021-12-19 15:34:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-12-19 15:34:56,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:56,519 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1] [2021-12-19 15:34:56,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-19 15:34:56,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 15:34:56,719 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:34:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash -409075929, now seen corresponding path program 7 times [2021-12-19 15:34:56,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:56,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186724086] [2021-12-19 15:34:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:56,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:31,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:31,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186724086] [2021-12-19 15:35:31,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186724086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:35:31,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843723236] [2021-12-19 15:35:31,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:35:31,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:31,310 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) [2021-12-19 15:35:31,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 15:35:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-19 15:35:31,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:33,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:37:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:37:01,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843723236] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:37:01,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:37:01,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 765 [2021-12-19 15:37:01,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674123793] [2021-12-19 15:37:01,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:37:01,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-19 15:37:01,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:37:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-19 15:37:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-19 15:37:01,721 INFO L87 Difference]: Start difference. First operand 1917 states and 2108 transitions. Second operand has 766 states, 765 states have (on average 2.499346405228758) internal successors, (1912), 766 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15