./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3a877d22 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/bitvector/gcd_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:53:07,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:53:07,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:53:07,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:53:07,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:53:07,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:53:07,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:53:07,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:53:07,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:53:07,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:53:07,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:53:07,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:53:07,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:53:07,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:53:07,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:53:07,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:53:07,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:53:07,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:53:07,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:53:07,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:53:07,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:53:07,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:53:07,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:53:07,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:53:07,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:53:07,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:53:07,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:53:07,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:53:07,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:53:07,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:53:07,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:53:07,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:53:07,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:53:07,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:53:07,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:53:07,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:53:07,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:53:07,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:53:07,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:53:07,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:53:07,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:53:07,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-15 16:53:07,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:53:07,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:53:07,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:53:07,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:53:07,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:53:07,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:53:07,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:53:07,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:53:07,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:53:07,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:53:07,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:53:07,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:53:07,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:53:07,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:53:07,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:53:07,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:53:07,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:53:07,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:53:07,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:53:07,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:53:07,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:53:07,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:07,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:53:07,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:53:07,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:53:07,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:53:07,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:53:07,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:53:07,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:53:07,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef [2021-12-15 16:53:07,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:53:07,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:53:07,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:53:07,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:53:07,743 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:53:07,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2021-12-15 16:53:07,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2e00f56/0ee374c06406431694ca2943b7d2b6e4/FLAGded88162f [2021-12-15 16:53:08,202 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:53:08,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2021-12-15 16:53:08,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2e00f56/0ee374c06406431694ca2943b7d2b6e4/FLAGded88162f [2021-12-15 16:53:08,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2e00f56/0ee374c06406431694ca2943b7d2b6e4 [2021-12-15 16:53:08,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:53:08,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:53:08,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:08,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:53:08,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:53:08,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd6894e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08, skipping insertion in model container [2021-12-15 16:53:08,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:53:08,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:53:08,409 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/bitvector/gcd_4.c[662,675] [2021-12-15 16:53:08,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:08,427 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:53:08,437 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/bitvector/gcd_4.c[662,675] [2021-12-15 16:53:08,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:08,452 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:53:08,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08 WrapperNode [2021-12-15 16:53:08,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:08,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:08,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:53:08,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:53:08,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,480 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-12-15 16:53:08,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:08,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:53:08,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:53:08,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:53:08,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:53:08,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:53:08,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:53:08,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:53:08,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (1/1) ... [2021-12-15 16:53:08,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:08,581 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) [2021-12-15 16:53:08,617 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 [2021-12-15 16:53:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:53:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 16:53:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:53:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:53:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:53:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:53:08,660 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:53:08,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:53:08,813 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:53:08,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:53:08,816 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:53:08,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:08 BoogieIcfgContainer [2021-12-15 16:53:08,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:53:08,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:53:08,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:53:08,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:53:08,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:53:08" (1/3) ... [2021-12-15 16:53:08,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7413879f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:08, skipping insertion in model container [2021-12-15 16:53:08,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:08" (2/3) ... [2021-12-15 16:53:08,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7413879f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:08, skipping insertion in model container [2021-12-15 16:53:08,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:08" (3/3) ... [2021-12-15 16:53:08,849 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-12-15 16:53:08,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:53:08,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-15 16:53:08,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:53:08,963 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 [2021-12-15 16:53:08,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-15 16:53:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.625) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:53:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 16:53:08,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:08,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 16:53:08,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-15 16:53:09,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651988847] [2021-12-15 16:53:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651988847] [2021-12-15 16:53:09,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651988847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:09,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:09,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111140801] [2021-12-15 16:53:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:09,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:09,211 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.625) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,269 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2021-12-15 16:53:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-15 16:53:09,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,275 INFO L225 Difference]: With dead ends: 86 [2021-12-15 16:53:09,275 INFO L226 Difference]: Without dead ends: 29 [2021-12-15 16:53:09,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:09,280 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-15 16:53:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-12-15 16:53:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 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) [2021-12-15 16:53:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-15 16:53:09,301 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-12-15 16:53:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,302 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-15 16:53:09,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-15 16:53:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:53:09,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:53:09,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:53:09,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2021-12-15 16:53:09,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020925403] [2021-12-15 16:53:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020925403] [2021-12-15 16:53:09,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020925403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:09,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:53:09,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297935726] [2021-12-15 16:53:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:09,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:09,332 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,355 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-15 16:53:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:53:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,356 INFO L225 Difference]: With dead ends: 40 [2021-12-15 16:53:09,356 INFO L226 Difference]: Without dead ends: 25 [2021-12-15 16:53:09,356 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 [2021-12-15 16:53:09,357 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-15 16:53:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-12-15 16:53:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-15 16:53:09,360 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-12-15 16:53:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-15 16:53:09,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-15 16:53:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:53:09,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:09,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 16:53:09,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 302707703, now seen corresponding path program 1 times [2021-12-15 16:53:09,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027542682] [2021-12-15 16:53:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027542682] [2021-12-15 16:53:09,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027542682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:09,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:09,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052757609] [2021-12-15 16:53:09,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:09,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:09,395 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,427 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-15 16:53:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:09,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:53:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,429 INFO L225 Difference]: With dead ends: 30 [2021-12-15 16:53:09,429 INFO L226 Difference]: Without dead ends: 28 [2021-12-15 16:53:09,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:09,430 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 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 [2021-12-15 16:53:09,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-15 16:53:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-12-15 16:53:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-12-15 16:53:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-15 16:53:09,434 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2021-12-15 16:53:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,434 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-15 16:53:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-15 16:53:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:53:09,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:09,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 16:53:09,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 302707895, now seen corresponding path program 1 times [2021-12-15 16:53:09,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300178921] [2021-12-15 16:53:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300178921] [2021-12-15 16:53:09,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300178921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:09,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:53:09,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867991950] [2021-12-15 16:53:09,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:09,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:09,463 INFO L87 Difference]: Start difference. First operand 22 states and 26 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) [2021-12-15 16:53:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,484 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-12-15 16:53:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:09,484 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 [2021-12-15 16:53:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,485 INFO L225 Difference]: With dead ends: 33 [2021-12-15 16:53:09,486 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 16:53:09,492 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 [2021-12-15 16:53:09,493 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 16:53:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 16:53:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-12-15 16:53:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-15 16:53:09,499 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2021-12-15 16:53:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,500 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-15 16:53:09,500 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) [2021-12-15 16:53:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-15 16:53:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 16:53:09,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:09,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 16:53:09,501 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1796493298, now seen corresponding path program 1 times [2021-12-15 16:53:09,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713992013] [2021-12-15 16:53:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713992013] [2021-12-15 16:53:09,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713992013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:09,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144530745] [2021-12-15 16:53:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:09,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:09,543 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) [2021-12-15 16:53:09,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 16:53:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:53:09,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144530745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:09,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 16:53:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933706433] [2021-12-15 16:53:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:09,675 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-15 16:53:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,702 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-12-15 16:53:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:09,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-12-15 16:53:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,703 INFO L225 Difference]: With dead ends: 29 [2021-12-15 16:53:09,703 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 16:53:09,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:09,704 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 16:53:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-15 16:53:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 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) [2021-12-15 16:53:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-12-15 16:53:09,708 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2021-12-15 16:53:09,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,708 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-12-15 16:53:09,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-15 16:53:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-12-15 16:53:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 16:53:09,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,709 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:09,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:09,926 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 [2021-12-15 16:53:09,927 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1796493490, now seen corresponding path program 1 times [2021-12-15 16:53:09,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595377757] [2021-12-15 16:53:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:09,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595377757] [2021-12-15 16:53:09,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595377757] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:09,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222515110] [2021-12-15 16:53:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:09,969 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) [2021-12-15 16:53:09,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 16:53:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:53:09,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:10,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:10,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222515110] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:10,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:10,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-12-15 16:53:10,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488437999] [2021-12-15 16:53:10,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:10,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 16:53:10,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 16:53:10,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-15 16:53:10,094 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-12-15 16:53:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:10,152 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-12-15 16:53:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 16:53:10,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 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 [2021-12-15 16:53:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:10,153 INFO L225 Difference]: With dead ends: 49 [2021-12-15 16:53:10,153 INFO L226 Difference]: Without dead ends: 37 [2021-12-15 16:53:10,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-12-15 16:53:10,154 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:10,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-15 16:53:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-12-15 16:53:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 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) [2021-12-15 16:53:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-12-15 16:53:10,158 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2021-12-15 16:53:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,158 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-12-15 16:53:10,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-12-15 16:53:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-12-15 16:53:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 16:53:10,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,159 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:10,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:10,375 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 [2021-12-15 16:53:10,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:10,378 INFO L85 PathProgramCache]: Analyzing trace with hash 620020322, now seen corresponding path program 1 times [2021-12-15 16:53:10,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:10,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657088517] [2021-12-15 16:53:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:10,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:10,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657088517] [2021-12-15 16:53:10,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657088517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:10,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399945231] [2021-12-15 16:53:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:10,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:10,438 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) [2021-12-15 16:53:10,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 16:53:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 16:53:10,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:10,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:10,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399945231] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:10,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:10,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-12-15 16:53:10,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995868474] [2021-12-15 16:53:10,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:10,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 16:53:10,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 16:53:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-15 16:53:10,590 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 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) [2021-12-15 16:53:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:10,641 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-12-15 16:53:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 16:53:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 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 20 [2021-12-15 16:53:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:10,642 INFO L225 Difference]: With dead ends: 46 [2021-12-15 16:53:10,642 INFO L226 Difference]: Without dead ends: 35 [2021-12-15 16:53:10,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-12-15 16:53:10,643 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:10,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-15 16:53:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-15 16:53:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-12-15 16:53:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-15 16:53:10,646 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2021-12-15 16:53:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,646 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-15 16:53:10,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 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) [2021-12-15 16:53:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-15 16:53:10,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 16:53:10,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,647 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:10,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:10,867 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 [2021-12-15 16:53:10,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1682922589, now seen corresponding path program 2 times [2021-12-15 16:53:10,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:10,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829325771] [2021-12-15 16:53:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 16:53:10,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829325771] [2021-12-15 16:53:10,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829325771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211373582] [2021-12-15 16:53:10,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:53:10,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:10,938 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) [2021-12-15 16:53:10,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 16:53:10,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:53:10,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:10,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 16:53:10,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:11,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:11,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211373582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:11,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:11,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2021-12-15 16:53:11,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949541483] [2021-12-15 16:53:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:11,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:11,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-15 16:53:11,108 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-15 16:53:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:11,138 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-12-15 16:53:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 16:53:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2021-12-15 16:53:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:11,139 INFO L225 Difference]: With dead ends: 45 [2021-12-15 16:53:11,139 INFO L226 Difference]: Without dead ends: 30 [2021-12-15 16:53:11,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-15 16:53:11,139 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:11,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-15 16:53:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-15 16:53:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-12-15 16:53:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-12-15 16:53:11,144 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2021-12-15 16:53:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:11,144 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-12-15 16:53:11,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-15 16:53:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-12-15 16:53:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 16:53:11,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:11,145 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:11,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:11,362 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 [2021-12-15 16:53:11,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1505428003, now seen corresponding path program 2 times [2021-12-15 16:53:11,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:11,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079658046] [2021-12-15 16:53:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:11,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:11,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079658046] [2021-12-15 16:53:11,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079658046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990801092] [2021-12-15 16:53:11,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:53:11,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:11,419 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) [2021-12-15 16:53:11,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 16:53:11,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:53:11,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:11,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 16:53:11,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:11,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:11,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990801092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:11,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:11,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2021-12-15 16:53:11,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300361766] [2021-12-15 16:53:11,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:11,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 16:53:11,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 16:53:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-12-15 16:53:11,736 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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) [2021-12-15 16:53:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:12,111 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2021-12-15 16:53:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 16:53:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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 24 [2021-12-15 16:53:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:12,112 INFO L225 Difference]: With dead ends: 75 [2021-12-15 16:53:12,112 INFO L226 Difference]: Without dead ends: 66 [2021-12-15 16:53:12,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-15 16:53:12,113 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 96 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:12,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 13 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-15 16:53:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2021-12-15 16:53:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 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) [2021-12-15 16:53:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-12-15 16:53:12,116 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 24 [2021-12-15 16:53:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:12,117 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-12-15 16:53:12,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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) [2021-12-15 16:53:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-12-15 16:53:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 16:53:12,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:12,117 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:12,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:12,331 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 [2021-12-15 16:53:12,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1505427811, now seen corresponding path program 1 times [2021-12-15 16:53:12,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:12,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681074289] [2021-12-15 16:53:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:12,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:12,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681074289] [2021-12-15 16:53:12,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681074289] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311196126] [2021-12-15 16:53:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:12,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:12,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:12,382 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) [2021-12-15 16:53:12,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 16:53:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 16:53:12,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:12,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:12,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311196126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:12,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:12,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2021-12-15 16:53:12,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322117302] [2021-12-15 16:53:12,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:12,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 16:53:12,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 16:53:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-15 16:53:12,668 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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) [2021-12-15 16:53:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:13,235 INFO L93 Difference]: Finished difference Result 152 states and 191 transitions. [2021-12-15 16:53:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-15 16:53:13,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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 24 [2021-12-15 16:53:13,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:13,236 INFO L225 Difference]: With dead ends: 152 [2021-12-15 16:53:13,236 INFO L226 Difference]: Without dead ends: 151 [2021-12-15 16:53:13,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=1211, Unknown=0, NotChecked=0, Total=1806 [2021-12-15 16:53:13,237 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 185 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:13,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 13 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-15 16:53:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2021-12-15 16:53:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 120 states have internal predecessors, (152), 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) [2021-12-15 16:53:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2021-12-15 16:53:13,245 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 24 [2021-12-15 16:53:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:13,246 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2021-12-15 16:53:13,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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) [2021-12-15 16:53:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2021-12-15 16:53:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-15 16:53:13,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:13,247 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:13,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:13,455 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 [2021-12-15 16:53:13,456 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1080699070, now seen corresponding path program 3 times [2021-12-15 16:53:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:13,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740032027] [2021-12-15 16:53:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:13,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-15 16:53:13,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:13,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740032027] [2021-12-15 16:53:13,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740032027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:13,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149085115] [2021-12-15 16:53:13,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 16:53:13,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:13,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:13,532 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) [2021-12-15 16:53:13,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 16:53:13,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-15 16:53:13,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:53:13,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-15 16:53:13,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:13,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149085115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:13,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:13,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-12-15 16:53:13,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82506072] [2021-12-15 16:53:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:13,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:13,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-15 16:53:13,647 INFO L87 Difference]: Start difference. First operand 121 states and 152 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) [2021-12-15 16:53:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:13,669 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2021-12-15 16:53:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:13,669 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 36 [2021-12-15 16:53:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:13,670 INFO L225 Difference]: With dead ends: 121 [2021-12-15 16:53:13,670 INFO L226 Difference]: Without dead ends: 120 [2021-12-15 16:53:13,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:53:13,671 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:13,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-15 16:53:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 84. [2021-12-15 16:53:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 83 states have internal predecessors, (99), 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) [2021-12-15 16:53:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2021-12-15 16:53:13,676 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 36 [2021-12-15 16:53:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:13,677 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2021-12-15 16:53:13,677 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) [2021-12-15 16:53:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2021-12-15 16:53:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-15 16:53:13,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:13,678 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:13,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:13,904 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 [2021-12-15 16:53:13,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:53:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1666612855, now seen corresponding path program 2 times [2021-12-15 16:53:13,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:13,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496795431] [2021-12-15 16:53:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:13,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496795431] [2021-12-15 16:53:14,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496795431] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751687648] [2021-12-15 16:53:14,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:53:14,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:14,026 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) [2021-12-15 16:53:14,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 16:53:14,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:53:14,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:14,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 16:53:14,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 16:53:14,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 38 proven. 56 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 16:53:16,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751687648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:16,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:16,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2021-12-15 16:53:16,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728173363] [2021-12-15 16:53:16,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:16,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-15 16:53:16,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-15 16:53:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=464, Unknown=1, NotChecked=0, Total=600 [2021-12-15 16:53:16,836 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 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) [2021-12-15 16:53:16,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:16,965 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2021-12-15 16:53:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 16:53:16,965 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 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 40 [2021-12-15 16:53:16,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:16,965 INFO L225 Difference]: With dead ends: 108 [2021-12-15 16:53:16,966 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 16:53:16,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=192, Invalid=563, Unknown=1, NotChecked=0, Total=756 [2021-12-15 16:53:16,966 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 108 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:16,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 16 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 169 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2021-12-15 16:53:16,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 16:53:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 16:53:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-15 16:53:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 16:53:16,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-12-15 16:53:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:16,967 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 16:53:16,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 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) [2021-12-15 16:53:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 16:53:16,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 16:53:16,969 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2021-12-15 16:53:16,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2021-12-15 16:53:17,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:17,170 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 [2021-12-15 16:53:17,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 16:53:17,328 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L23-3(lines 21 37) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L861 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: true [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L861 garLoopResultBuilder]: At program point L36(lines 20 37) the Hoare annotation is: true [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-12-15 16:53:17,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L854 garLoopResultBuilder]: At program point L30-2(lines 29 35) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_gcd_test_~b#1| |ULTIMATE.start_gcd_test_~a#1|)) (.cse2 (<= 18 |ULTIMATE.start_gcd_test_~b#1|)) (.cse3 (<= |ULTIMATE.start_gcd_test_~b#1| 18))) (or (and (<= .cse0 18) (<= 18 .cse0) (<= 18 (div (+ (* |ULTIMATE.start_gcd_test_~a#1| (- 1)) 63) 3)) (<= (div (+ |ULTIMATE.start_gcd_test_~a#1| (- 63)) (- 3)) 18)) (let ((.cse1 (+ (* 3 |ULTIMATE.start_gcd_test_~b#1|) |ULTIMATE.start_gcd_test_~a#1|))) (and (<= 63 .cse1) (<= .cse1 63) .cse2 .cse3)) (and (<= 63 .cse0) .cse2 .cse3 (<= .cse0 63)) (let ((.cse4 (+ (* 2 |ULTIMATE.start_gcd_test_~b#1|) |ULTIMATE.start_gcd_test_~a#1|))) (and (<= 63 .cse4) (<= .cse4 63) .cse2 .cse3)) (and (<= 0 |ULTIMATE.start_gcd_test_~b#1|) (<= (div (div (+ (* |ULTIMATE.start_gcd_test_~b#1| (- 1)) (- 108)) 2) (- 3)) 18) (<= |ULTIMATE.start_gcd_test_~a#1| 2147483647) (<= (div (+ |ULTIMATE.start_gcd_test_~b#1| |ULTIMATE.start_gcd_test_~a#1| (- 63)) (- 3)) 18)) (and (= |ULTIMATE.start_gcd_test_~a#1| 63) .cse2 .cse3))) [2021-12-15 16:53:17,330 INFO L861 garLoopResultBuilder]: At program point L55(lines 40 56) the Hoare annotation is: true [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L22-2(line 22) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L861 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L22-4(lines 21 37) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L861 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-15 16:53:17,330 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-12-15 16:53:17,330 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2021-12-15 16:53:17,331 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2021-12-15 16:53:17,333 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2021-12-15 16:53:17,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 16:53:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 04:53:17 BoogieIcfgContainer [2021-12-15 16:53:17,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 16:53:17,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 16:53:17,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 16:53:17,346 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 16:53:17,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:08" (3/4) ... [2021-12-15 16:53:17,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 16:53:17,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-15 16:53:17,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-15 16:53:17,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-15 16:53:17,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 16:53:17,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 16:53:17,428 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 16:53:17,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 16:53:17,429 INFO L158 Benchmark]: Toolchain (without parser) took 9202.19ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 27.8MB in the end (delta: 16.3MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,429 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 60.2MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:53:17,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.78ms. Allocated memory is still 81.8MB. Free memory was 43.9MB in the beginning and 58.5MB in the end (delta: -14.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.37ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 57.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,430 INFO L158 Benchmark]: Boogie Preprocessor took 16.89ms. Allocated memory is still 81.8MB. Free memory was 57.1MB in the beginning and 56.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:53:17,431 INFO L158 Benchmark]: RCFGBuilder took 324.86ms. Allocated memory is still 81.8MB. Free memory was 56.0MB in the beginning and 46.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,431 INFO L158 Benchmark]: TraceAbstraction took 8521.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.7MB in the beginning and 29.9MB in the end (delta: 15.7MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,432 INFO L158 Benchmark]: Witness Printer took 82.86ms. Allocated memory is still 98.6MB. Free memory was 29.9MB in the beginning and 27.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:53:17,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 60.2MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.78ms. Allocated memory is still 81.8MB. Free memory was 43.9MB in the beginning and 58.5MB in the end (delta: -14.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.37ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 57.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.89ms. Allocated memory is still 81.8MB. Free memory was 57.1MB in the beginning and 56.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.86ms. Allocated memory is still 81.8MB. Free memory was 56.0MB in the beginning and 46.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8521.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.7MB in the beginning and 29.9MB in the end (delta: 15.7MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Witness Printer took 82.86ms. Allocated memory is still 98.6MB. Free memory was 29.9MB in the beginning and 27.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 12, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 549 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 41 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 175 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 994 IncrementalHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 175 mSolverCounterUnsat, 73 mSDtfsCounter, 994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=10, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 110 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 36 NumberOfFragments, 129 HoareAnnotationTreeSize, 15 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 507 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 409 NumberOfCodeBlocks, 397 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 504 ConstructedInterpolants, 15 QuantifiedInterpolants, 3498 SizeOfPredicates, 34 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 268/748 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((b + a <= 18 && 18 <= b + a) && 18 <= (a * -1 + 63) / 3) && (a + -63) / -3 <= 18) || (((63 <= 3 * b + a && 3 * b + a <= 63) && 18 <= b) && b <= 18)) || (((63 <= b + a && 18 <= b) && b <= 18) && b + a <= 63)) || (((63 <= 2 * b + a && 2 * b + a <= 63) && 18 <= b) && b <= 18)) || (((0 <= b && (b * -1 + -108) / 2 / -3 <= 18) && a <= 2147483647) && (b + a + -63) / -3 <= 18)) || ((a == 63 && 18 <= b) && b <= 18) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-15 16:53:17,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE