./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark13_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/benchmark13_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 cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:05:55,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:05:55,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:05:55,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:05:55,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:05:55,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:05:55,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:05:55,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:05:55,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:05:55,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:05:55,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:05:55,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:05:55,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:05:55,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:05:55,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:05:55,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:05:55,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:05:55,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:05:55,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:05:55,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:05:55,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:05:55,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:05:55,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:05:55,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:05:55,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:05:55,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:05:55,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:05:55,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:05:55,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:05:55,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:05:55,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:05:55,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:05:55,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:05:55,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:05:55,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:05:55,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:05:55,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:05:55,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:05:55,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:05:55,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:05:55,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:05:55,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-16 09:05:55,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:05:55,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:05:55,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:05:55,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:05:55,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:05:55,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:05:55,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:05:55,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:05:55,533 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:05:55,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:05:55,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 09:05:55,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:05:55,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:05:55,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 09:05:55,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:05:55,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:05:55,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:05:55,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:05:55,536 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:05:55,536 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 09:05:55,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:05:55,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:05:55,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:05:55,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:05:55,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:05:55,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:05:55,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:55,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:05:55,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:05:55,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:05:55,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:05:55,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:05:55,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:05:55,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:05:55,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 [2021-12-16 09:05:55,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:05:55,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:05:55,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:05:55,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:05:55,799 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:05:55,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-12-16 09:05:55,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410bacf11/255d785cc77544a485f03684bae567f4/FLAG2d2d99dbd [2021-12-16 09:05:56,281 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:05:56,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-12-16 09:05:56,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410bacf11/255d785cc77544a485f03684bae567f4/FLAG2d2d99dbd [2021-12-16 09:05:56,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410bacf11/255d785cc77544a485f03684bae567f4 [2021-12-16 09:05:56,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:05:56,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:05:56,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:56,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:05:56,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:05:56,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6676c5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56, skipping insertion in model container [2021-12-16 09:05:56,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:05:56,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:05:56,464 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/benchmark13_conjunctive.i[873,886] [2021-12-16 09:05:56,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:56,495 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:05:56,509 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/benchmark13_conjunctive.i[873,886] [2021-12-16 09:05:56,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:56,525 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:05:56,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56 WrapperNode [2021-12-16 09:05:56,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:56,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:56,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:05:56,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:05:56,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,555 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-12-16 09:05:56,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:56,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:05:56,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:05:56,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:05:56,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:05:56,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:05:56,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:05:56,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:05:56,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (1/1) ... [2021-12-16 09:05:56,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:56,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:56,621 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) [2021-12-16 09:05:56,651 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 [2021-12-16 09:05:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 09:05:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 09:05:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:05:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:05:56,713 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:05:56,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:05:56,845 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:05:56,850 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:05:56,851 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:05:56,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:56 BoogieIcfgContainer [2021-12-16 09:05:56,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:05:56,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:05:56,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:05:56,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:05:56,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:05:56" (1/3) ... [2021-12-16 09:05:56,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd97691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:56, skipping insertion in model container [2021-12-16 09:05:56,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:56" (2/3) ... [2021-12-16 09:05:56,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd97691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:56, skipping insertion in model container [2021-12-16 09:05:56,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:56" (3/3) ... [2021-12-16 09:05:56,862 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark13_conjunctive.i [2021-12-16 09:05:56,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:05:56,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-16 09:05:56,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:05:56,929 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 [2021-12-16 09:05:56,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 09:05:56,942 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) [2021-12-16 09:05:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 09:05:56,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:56,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 09:05:56,960 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)] === [2021-12-16 09:05:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-16 09:05:56,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:56,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693608930] [2021-12-16 09:05:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:56,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693608930] [2021-12-16 09:05:57,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693608930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:57,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:57,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:57,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634077672] [2021-12-16 09:05:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:57,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:57,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:57,181 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) [2021-12-16 09:05:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:57,236 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-16 09:05:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:05:57,255 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 [2021-12-16 09:05:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:57,262 INFO L225 Difference]: With dead ends: 35 [2021-12-16 09:05:57,262 INFO L226 Difference]: Without dead ends: 16 [2021-12-16 09:05:57,265 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 [2021-12-16 09:05:57,268 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:57,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-16 09:05:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-16 09:05:57,315 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) [2021-12-16 09:05:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-16 09:05:57,318 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-12-16 09:05:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:57,318 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-16 09:05:57,319 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) [2021-12-16 09:05:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-16 09:05:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 09:05:57,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:57,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 09:05:57,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:05:57,321 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)] === [2021-12-16 09:05:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-16 09:05:57,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346939126] [2021-12-16 09:05:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:57,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346939126] [2021-12-16 09:05:57,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346939126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:57,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:57,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:57,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270431298] [2021-12-16 09:05:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:57,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:57,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:57,399 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) [2021-12-16 09:05:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:57,429 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-16 09:05:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:57,430 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 [2021-12-16 09:05:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:57,431 INFO L225 Difference]: With dead ends: 14 [2021-12-16 09:05:57,431 INFO L226 Difference]: Without dead ends: 13 [2021-12-16 09:05:57,431 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 [2021-12-16 09:05:57,432 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 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 [2021-12-16 09:05:57,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-16 09:05:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-16 09:05:57,436 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) [2021-12-16 09:05:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-16 09:05:57,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-12-16 09:05:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:57,437 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-16 09:05:57,437 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) [2021-12-16 09:05:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-16 09:05:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 09:05:57,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:57,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:57,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:05:57,438 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)] === [2021-12-16 09:05:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-16 09:05:57,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:57,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631075532] [2021-12-16 09:05:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:57,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:57,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631075532] [2021-12-16 09:05:57,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631075532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:57,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:57,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:57,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773226562] [2021-12-16 09:05:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:57,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:05:57,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:05:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:57,465 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:57,475 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-12-16 09:05:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:05:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 09:05:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:57,477 INFO L225 Difference]: With dead ends: 17 [2021-12-16 09:05:57,477 INFO L226 Difference]: Without dead ends: 16 [2021-12-16 09:05:57,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:57,479 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 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 [2021-12-16 09:05:57,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-16 09:05:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-12-16 09:05:57,490 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) [2021-12-16 09:05:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-16 09:05:57,491 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-12-16 09:05:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:57,492 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-16 09:05:57,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-16 09:05:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:05:57,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:57,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:57,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:05:57,493 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)] === [2021-12-16 09:05:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-16 09:05:57,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338214425] [2021-12-16 09:05:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:57,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:57,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338214425] [2021-12-16 09:05:57,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338214425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:57,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:57,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:57,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085354394] [2021-12-16 09:05:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:57,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:05:57,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:05:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:57,532 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:57,539 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-12-16 09:05:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:05:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:05:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:57,540 INFO L225 Difference]: With dead ends: 15 [2021-12-16 09:05:57,540 INFO L226 Difference]: Without dead ends: 14 [2021-12-16 09:05:57,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:57,542 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:57,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-16 09:05:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-16 09:05:57,546 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) [2021-12-16 09:05:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-16 09:05:57,546 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-12-16 09:05:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:57,547 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-16 09:05:57,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-16 09:05:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 09:05:57,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:57,548 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:57,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:05:57,549 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)] === [2021-12-16 09:05:57,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-16 09:05:57,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:57,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498910370] [2021-12-16 09:05:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:57,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:57,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498910370] [2021-12-16 09:05:57,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498910370] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:57,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850916376] [2021-12-16 09:05:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:57,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:57,635 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) [2021-12-16 09:05:57,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:05:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:57,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:05:57,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850916376] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:57,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:57,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-16 09:05:57,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325262036] [2021-12-16 09:05:57,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:57,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:05:57,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:05:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:05:57,799 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) [2021-12-16 09:05:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:57,889 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-16 09:05:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 09:05:57,889 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 [2021-12-16 09:05:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:57,890 INFO L225 Difference]: With dead ends: 31 [2021-12-16 09:05:57,890 INFO L226 Difference]: Without dead ends: 30 [2021-12-16 09:05:57,891 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 [2021-12-16 09:05:57,892 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:57,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-16 09:05:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-12-16 09:05:57,910 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) [2021-12-16 09:05:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-16 09:05:57,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-12-16 09:05:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:57,911 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-16 09:05:57,911 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) [2021-12-16 09:05:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-16 09:05:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 09:05:57,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:57,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:57,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:58,139 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 [2021-12-16 09:05:58,141 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)] === [2021-12-16 09:05:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-12-16 09:05:58,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:58,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186434392] [2021-12-16 09:05:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:58,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:58,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:58,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186434392] [2021-12-16 09:05:58,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186434392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:58,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178232126] [2021-12-16 09:05:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:58,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:58,174 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) [2021-12-16 09:05:58,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:05:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:05:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:58,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178232126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:58,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 09:05:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709649033] [2021-12-16 09:05:58,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:05:58,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:05:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:58,302 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-12-16 09:05:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:58,382 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-12-16 09:05:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 [2021-12-16 09:05:58,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:58,384 INFO L225 Difference]: With dead ends: 30 [2021-12-16 09:05:58,384 INFO L226 Difference]: Without dead ends: 29 [2021-12-16 09:05:58,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:58,386 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:58,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-16 09:05:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-16 09:05:58,393 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) [2021-12-16 09:05:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-12-16 09:05:58,394 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2021-12-16 09:05:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:58,395 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-12-16 09:05:58,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-12-16 09:05:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-12-16 09:05:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-16 09:05:58,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:58,397 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-16 09:05:58,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:58,603 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 [2021-12-16 09:05:58,604 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)] === [2021-12-16 09:05:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-12-16 09:05:58,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:58,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946273899] [2021-12-16 09:05:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:58,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:58,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946273899] [2021-12-16 09:05:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946273899] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717393017] [2021-12-16 09:05:58,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:58,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:58,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:58,716 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) [2021-12-16 09:05:58,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:05:58,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:05:58,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:58,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:05:58,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:58,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:59,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717393017] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:59,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:59,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-16 09:05:59,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255980135] [2021-12-16 09:05:59,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:59,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 09:05:59,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 09:05:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:05:59,013 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) [2021-12-16 09:05:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:59,208 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-12-16 09:05:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 09:05:59,209 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 [2021-12-16 09:05:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:59,212 INFO L225 Difference]: With dead ends: 64 [2021-12-16 09:05:59,212 INFO L226 Difference]: Without dead ends: 63 [2021-12-16 09:05:59,213 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 [2021-12-16 09:05:59,215 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 71 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:59,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 55 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-16 09:05:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-12-16 09:05:59,233 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) [2021-12-16 09:05:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-12-16 09:05:59,237 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 25 [2021-12-16 09:05:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:59,240 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-12-16 09:05:59,240 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) [2021-12-16 09:05:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-12-16 09:05:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 09:05:59,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:59,242 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-16 09:05:59,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:59,462 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 [2021-12-16 09:05:59,462 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)] === [2021-12-16 09:05:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-12-16 09:05:59,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:59,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910661283] [2021-12-16 09:05:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:59,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:59,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910661283] [2021-12-16 09:05:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910661283] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239403797] [2021-12-16 09:05:59,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:59,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:59,536 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) [2021-12-16 09:05:59,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:05:59,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:05:59,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:59,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:05:59,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:59,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:59,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239403797] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:59,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:59,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-16 09:05:59,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350060720] [2021-12-16 09:05:59,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:59,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 09:05:59,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 09:05:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:05:59,733 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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) [2021-12-16 09:05:59,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:59,773 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-12-16 09:05:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:05:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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 [2021-12-16 09:05:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:59,774 INFO L225 Difference]: With dead ends: 60 [2021-12-16 09:05:59,774 INFO L226 Difference]: Without dead ends: 59 [2021-12-16 09:05:59,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:05:59,775 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:59,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-16 09:05:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-16 09:05:59,780 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) [2021-12-16 09:05:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-12-16 09:05:59,781 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 27 [2021-12-16 09:05:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:59,781 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-12-16 09:05:59,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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) [2021-12-16 09:05:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-12-16 09:05:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-16 09:05:59,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:59,783 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-16 09:05:59,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:59,987 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 [2021-12-16 09:05:59,987 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)] === [2021-12-16 09:05:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-12-16 09:05:59,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206789449] [2021-12-16 09:05:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:59,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:00,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206789449] [2021-12-16 09:06:00,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206789449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617349217] [2021-12-16 09:06:00,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:06:00,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:00,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:00,272 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) [2021-12-16 09:06:00,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:06:00,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 09:06:00,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:00,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 09:06:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:00,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:00,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617349217] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:00,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:00,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-12-16 09:06:00,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730216703] [2021-12-16 09:06:00,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:00,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-16 09:06:00,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-16 09:06:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-16 09:06:00,982 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) [2021-12-16 09:06:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:01,416 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-12-16 09:06:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-16 09:06:01,416 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 [2021-12-16 09:06:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:01,417 INFO L225 Difference]: With dead ends: 130 [2021-12-16 09:06:01,417 INFO L226 Difference]: Without dead ends: 129 [2021-12-16 09:06:01,419 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 [2021-12-16 09:06:01,420 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 182 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:01,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 105 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:06:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-16 09:06:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2021-12-16 09:06:01,426 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) [2021-12-16 09:06:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-12-16 09:06:01,428 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 55 [2021-12-16 09:06:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:01,428 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-12-16 09:06:01,429 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) [2021-12-16 09:06:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-12-16 09:06:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 09:06:01,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:01,430 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-16 09:06:01,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:01,635 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 [2021-12-16 09:06:01,636 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)] === [2021-12-16 09:06:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 3 times [2021-12-16 09:06:01,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:01,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601295272] [2021-12-16 09:06:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:01,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:01,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:01,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601295272] [2021-12-16 09:06:01,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601295272] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:01,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140646602] [2021-12-16 09:06:01,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:06:01,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:01,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:01,757 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) [2021-12-16 09:06:01,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 09:06:01,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 09:06:01,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:01,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 09:06:01,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:01,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:02,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140646602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:02,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:02,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-16 09:06:02,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964095205] [2021-12-16 09:06:02,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:02,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 09:06:02,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 09:06:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:06:02,156 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 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) [2021-12-16 09:06:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:02,220 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-12-16 09:06:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 09:06:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 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 [2021-12-16 09:06:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:02,222 INFO L225 Difference]: With dead ends: 120 [2021-12-16 09:06:02,222 INFO L226 Difference]: Without dead ends: 119 [2021-12-16 09:06:02,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:06:02,223 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:02,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:06:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-16 09:06:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-16 09:06:02,242 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) [2021-12-16 09:06:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-12-16 09:06:02,244 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 57 [2021-12-16 09:06:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:02,246 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-12-16 09:06:02,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 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) [2021-12-16 09:06:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-12-16 09:06:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 09:06:02,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:02,250 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-16 09:06:02,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:02,459 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 [2021-12-16 09:06:02,460 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)] === [2021-12-16 09:06:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-12-16 09:06:02,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:02,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469711122] [2021-12-16 09:06:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:02,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:03,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469711122] [2021-12-16 09:06:03,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469711122] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133389679] [2021-12-16 09:06:03,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:06:03,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:03,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:03,200 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) [2021-12-16 09:06:03,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 09:06:03,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:06:03,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:03,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-16 09:06:03,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:03,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:05,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133389679] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:05,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:05,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-12-16 09:06:05,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364471037] [2021-12-16 09:06:05,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:05,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-16 09:06:05,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-16 09:06:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-16 09:06:05,247 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) [2021-12-16 09:06:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:06,573 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2021-12-16 09:06:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-16 09:06:06,573 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 [2021-12-16 09:06:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:06,575 INFO L225 Difference]: With dead ends: 262 [2021-12-16 09:06:06,575 INFO L226 Difference]: Without dead ends: 261 [2021-12-16 09:06:06,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-12-16 09:06:06,579 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 530 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:06,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 165 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:06:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-16 09:06:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2021-12-16 09:06:06,587 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) [2021-12-16 09:06:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2021-12-16 09:06:06,588 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 115 [2021-12-16 09:06:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:06,589 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2021-12-16 09:06:06,589 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) [2021-12-16 09:06:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2021-12-16 09:06:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 09:06:06,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:06,590 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-16 09:06:06,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:06,803 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 [2021-12-16 09:06:06,803 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)] === [2021-12-16 09:06:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 4 times [2021-12-16 09:06:06,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:06,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926861872] [2021-12-16 09:06:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:06,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:07,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:07,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926861872] [2021-12-16 09:06:07,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926861872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996006393] [2021-12-16 09:06:07,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:06:07,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:07,084 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) [2021-12-16 09:06:07,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 09:06:07,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:06:07,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:07,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 09:06:07,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:07,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:08,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996006393] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:08,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:08,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-16 09:06:08,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188230901] [2021-12-16 09:06:08,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:08,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-16 09:06:08,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-16 09:06:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:06:08,097 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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) [2021-12-16 09:06:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:08,221 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2021-12-16 09:06:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-16 09:06:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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 [2021-12-16 09:06:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:08,223 INFO L225 Difference]: With dead ends: 240 [2021-12-16 09:06:08,223 INFO L226 Difference]: Without dead ends: 239 [2021-12-16 09:06:08,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:06:08,225 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:08,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 158 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:06:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-16 09:06:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-16 09:06:08,237 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) [2021-12-16 09:06:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-12-16 09:06:08,240 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 117 [2021-12-16 09:06:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:08,241 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-12-16 09:06:08,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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) [2021-12-16 09:06:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-12-16 09:06:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-16 09:06:08,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:08,248 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-16 09:06:08,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:08,455 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 [2021-12-16 09:06:08,456 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)] === [2021-12-16 09:06:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-12-16 09:06:08,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:08,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012681424] [2021-12-16 09:06:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:08,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:10,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012681424] [2021-12-16 09:06:10,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012681424] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004620412] [2021-12-16 09:06:10,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:06:10,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:10,871 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) [2021-12-16 09:06:10,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 09:06:10,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:06:10,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:10,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-16 09:06:10,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:11,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:17,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004620412] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:17,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:17,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-12-16 09:06:17,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004766889] [2021-12-16 09:06:17,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:17,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-16 09:06:17,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-16 09:06:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-16 09:06:17,043 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) [2021-12-16 09:06:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:21,688 INFO L93 Difference]: Finished difference Result 526 states and 573 transitions. [2021-12-16 09:06:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-16 09:06:21,689 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 [2021-12-16 09:06:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:21,691 INFO L225 Difference]: With dead ends: 526 [2021-12-16 09:06:21,691 INFO L226 Difference]: Without dead ends: 525 [2021-12-16 09:06:21,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2021-12-16 09:06:21,698 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1333 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:21,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 264 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:06:21,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-16 09:06:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 477. [2021-12-16 09:06:21,707 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) [2021-12-16 09:06:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 524 transitions. [2021-12-16 09:06:21,709 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 524 transitions. Word has length 235 [2021-12-16 09:06:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:21,709 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 524 transitions. [2021-12-16 09:06:21,710 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) [2021-12-16 09:06:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 524 transitions. [2021-12-16 09:06:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-16 09:06:21,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:21,712 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-16 09:06:21,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:21,925 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 [2021-12-16 09:06:21,926 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)] === [2021-12-16 09:06:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 5 times [2021-12-16 09:06:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021435582] [2021-12-16 09:06:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:21,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:22,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:22,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021435582] [2021-12-16 09:06:22,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021435582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:22,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385568612] [2021-12-16 09:06:22,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:06:22,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:22,765 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) [2021-12-16 09:06:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:06:22,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:06:22,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:22,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-16 09:06:22,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:23,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:25,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385568612] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:25,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:25,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-16 09:06:25,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602166550] [2021-12-16 09:06:25,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:25,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-16 09:06:25,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-16 09:06:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:06:25,665 INFO L87 Difference]: Start difference. First operand 477 states and 524 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 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) [2021-12-16 09:06:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:25,929 INFO L93 Difference]: Finished difference Result 480 states and 527 transitions. [2021-12-16 09:06:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-16 09:06:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 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 [2021-12-16 09:06:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:25,931 INFO L225 Difference]: With dead ends: 480 [2021-12-16 09:06:25,931 INFO L226 Difference]: Without dead ends: 479 [2021-12-16 09:06:25,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:06:25,932 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:25,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 304 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:06:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-16 09:06:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2021-12-16 09:06:25,941 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) [2021-12-16 09:06:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2021-12-16 09:06:25,942 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 237 [2021-12-16 09:06:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:25,943 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2021-12-16 09:06:25,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 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) [2021-12-16 09:06:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2021-12-16 09:06:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-12-16 09:06:25,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:25,950 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-12-16 09:06:25,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:26,163 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 [2021-12-16 09:06:26,163 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)] === [2021-12-16 09:06:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2021-12-16 09:06:26,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:26,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643759467] [2021-12-16 09:06:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:26,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:34,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643759467] [2021-12-16 09:06:34,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643759467] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138315877] [2021-12-16 09:06:34,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 09:06:34,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:34,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:34,919 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) [2021-12-16 09:06:34,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:06:35,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-16 09:06:35,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:35,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-16 09:06:35,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:06:36,011 INFO L328 TraceCheckSpWp]: Computing backward predicates...