/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:02:33,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:02:33,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:02:33,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:02:33,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:02:33,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:02:33,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:02:33,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:02:33,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:02:33,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:02:33,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:02:33,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:02:33,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:02:33,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:02:33,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:02:33,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:02:33,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:02:33,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:02:33,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:02:33,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:02:33,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:02:33,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:02:33,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:02:33,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:02:33,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 05:02:33,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 05:02:33,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 05:02:33,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 05:02:33,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 05:02:33,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 05:02:33,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:02:33,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:02:33,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:02:33,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:02:33,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:02:33,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:02:33,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:02:33,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:02:33,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:02:33,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:02:33,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:02:33,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:02:33,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:02:33,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:02:33,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:02:33,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:02:33,648 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:02:33,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:02:33,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:02:33,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:02:33,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:02:33,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:02:33,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:02:33,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:02:33,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:02:33,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:02:33,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:02:33,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:02:33,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:02:33,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:02:33,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:02:33,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:02:33,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:02:33,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:02:33,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:02:33,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:02:33,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:02:33,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:02:34,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:02:34,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:02:34,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:02:34,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:02:34,130 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:02:34,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2020-12-22 05:02:34,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66978a8c0/72f287dcb3cc46eaaf03122047234200/FLAG461f19732 [2020-12-22 05:02:34,769 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:02:34,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2020-12-22 05:02:34,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66978a8c0/72f287dcb3cc46eaaf03122047234200/FLAG461f19732 [2020-12-22 05:02:35,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66978a8c0/72f287dcb3cc46eaaf03122047234200 [2020-12-22 05:02:35,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:02:35,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:02:35,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:02:35,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:02:35,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:02:35,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db21640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35, skipping insertion in model container [2020-12-22 05:02:35,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:02:35,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:02:35,416 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2020-12-22 05:02:35,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:02:35,443 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:02:35,456 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2020-12-22 05:02:35,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:02:35,483 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:02:35,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35 WrapperNode [2020-12-22 05:02:35,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:02:35,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:02:35,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:02:35,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:02:35,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:02:35,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:02:35,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:02:35,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:02:35,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... [2020-12-22 05:02:35,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:02:35,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:02:35,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:02:35,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:02:35,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:02:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:02:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:02:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:02:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:02:36,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:02:36,205 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:02:36,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:02:36 BoogieIcfgContainer [2020-12-22 05:02:36,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:02:36,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:02:36,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:02:36,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:02:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:02:35" (1/3) ... [2020-12-22 05:02:36,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:02:36, skipping insertion in model container [2020-12-22 05:02:36,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:02:35" (2/3) ... [2020-12-22 05:02:36,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:02:36, skipping insertion in model container [2020-12-22 05:02:36,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:02:36" (3/3) ... [2020-12-22 05:02:36,220 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2020-12-22 05:02:36,232 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:02:36,237 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:02:36,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:02:36,303 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:02:36,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:02:36,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:02:36,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:02:36,304 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:02:36,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:02:36,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:02:36,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:02:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:02:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:02:36,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:36,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:36,334 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:36,341 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:02:36,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:36,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238033062] [2020-12-22 05:02:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238033062] [2020-12-22 05:02:36,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:02:36,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:02:36,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783570508] [2020-12-22 05:02:36,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:02:36,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:02:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:02:36,548 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:02:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:36,573 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-12-22 05:02:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:02:36,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:02:36,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:36,585 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:02:36,585 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:02:36,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:02:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:02:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:02:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:02:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-22 05:02:36,631 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2020-12-22 05:02:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:36,632 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-22 05:02:36,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:02:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-22 05:02:36,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:02:36,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:36,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:36,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:02:36,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:02:36,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:36,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449280818] [2020-12-22 05:02:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:36,661 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:02:36,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125108980] [2020-12-22 05:02:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:02:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:02:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:37,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449280818] [2020-12-22 05:02:37,053 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:37,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125108980] [2020-12-22 05:02:37,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:02:37,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:02:37,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527691626] [2020-12-22 05:02:37,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:02:37,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:37,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:02:37,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:02:37,059 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 9 states. [2020-12-22 05:02:37,291 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 8 [2020-12-22 05:02:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:37,657 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-22 05:02:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:02:37,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-22 05:02:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:37,660 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:02:37,660 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 05:02:37,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:02:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 05:02:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-12-22 05:02:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:02:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-22 05:02:37,671 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2020-12-22 05:02:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:37,671 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-22 05:02:37,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:02:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-22 05:02:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:02:37,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:37,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:37,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:02:37,889 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-22 05:02:37,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:37,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883249267] [2020-12-22 05:02:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:37,912 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:02:37,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835978599] [2020-12-22 05:02:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:02:37,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:02:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:38,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883249267] [2020-12-22 05:02:38,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:38,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835978599] [2020-12-22 05:02:38,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:02:38,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 05:02:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547927933] [2020-12-22 05:02:38,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:02:38,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:02:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:02:38,253 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 10 states. [2020-12-22 05:02:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:38,863 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:02:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:02:38,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-22 05:02:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:38,866 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:02:38,866 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:02:38,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:02:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:02:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-22 05:02:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 05:02:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-12-22 05:02:38,879 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 13 [2020-12-22 05:02:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:38,879 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-12-22 05:02:38,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:02:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-12-22 05:02:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:02:38,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:38,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:39,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:39,092 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2020-12-22 05:02:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:39,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823690494] [2020-12-22 05:02:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:39,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:02:39,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76687947] [2020-12-22 05:02:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:39,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:02:39,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:02:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:39,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823690494] [2020-12-22 05:02:39,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:39,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76687947] [2020-12-22 05:02:39,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:02:39,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:02:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917644575] [2020-12-22 05:02:39,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:02:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:02:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:02:39,315 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-12-22 05:02:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:39,654 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-12-22 05:02:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:02:39,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 05:02:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:39,658 INFO L225 Difference]: With dead ends: 95 [2020-12-22 05:02:39,658 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:02:39,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:02:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:02:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-12-22 05:02:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 05:02:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-12-22 05:02:39,691 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 16 [2020-12-22 05:02:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:39,692 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-12-22 05:02:39,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:02:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-12-22 05:02:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:02:39,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:39,696 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:39,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:39,910 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2020-12-22 05:02:39,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:39,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587974193] [2020-12-22 05:02:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:39,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:02:39,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375078660] [2020-12-22 05:02:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:02:39,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:02:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:40,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587974193] [2020-12-22 05:02:40,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:40,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375078660] [2020-12-22 05:02:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:02:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:02:40,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567447529] [2020-12-22 05:02:40,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:02:40,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:02:40,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:02:40,138 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 8 states. [2020-12-22 05:02:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:40,334 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2020-12-22 05:02:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:02:40,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 05:02:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:40,338 INFO L225 Difference]: With dead ends: 95 [2020-12-22 05:02:40,338 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:02:40,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:02:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:02:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-12-22 05:02:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:02:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-12-22 05:02:40,357 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 25 [2020-12-22 05:02:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:40,358 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-12-22 05:02:40,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:02:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-12-22 05:02:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:02:40,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:02:40,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:02:40,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:40,576 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:02:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:02:40,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2020-12-22 05:02:40,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:02:40,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681386436] [2020-12-22 05:02:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:02:40,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:02:40,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925594484] [2020-12-22 05:02:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:02:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:02:40,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:02:40,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:02:40,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:02:40,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:02:40,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:02:40,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:02:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:02:40,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681386436] [2020-12-22 05:02:40,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:40,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925594484] [2020-12-22 05:02:40,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:02:40,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:02:40,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877174477] [2020-12-22 05:02:40,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:02:40,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:40,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:02:40,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:02:40,911 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 11 states. [2020-12-22 05:02:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:02:41,608 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-12-22 05:02:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:02:41,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-22 05:02:41,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:02:41,612 INFO L225 Difference]: With dead ends: 51 [2020-12-22 05:02:41,612 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:02:41,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:02:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:02:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:02:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:02:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:02:41,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-22 05:02:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:02:41,614 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:02:41,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:02:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:02:41,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:02:41,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:02:41,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:02:42,379 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 05:02:42,438 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,438 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-22 05:02:42,438 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-12-22 05:02:42,439 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,440 INFO L185 CegarLoopUtils]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 1)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~a~0 1) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 1) .cse0 (<= 0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (= ULTIMATE.start_main_~b~0 0)))) [2020-12-22 05:02:42,440 INFO L189 CegarLoopUtils]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2020-12-22 05:02:42,440 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,441 INFO L185 CegarLoopUtils]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-22 05:02:42,441 INFO L189 CegarLoopUtils]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2020-12-22 05:02:42,441 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,441 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,441 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 1)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) .cse0 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse1 (<= 1 ULTIMATE.start_main_~b~0)) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~y~0) .cse0 (<= 0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1))) [2020-12-22 05:02:42,441 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,442 INFO L185 CegarLoopUtils]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) .cse0 .cse1 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse2 (<= 1 ULTIMATE.start_main_~b~0)) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~y~0) .cse0 .cse1 (<= 0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse2))) [2020-12-22 05:02:42,442 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,442 INFO L185 CegarLoopUtils]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-22 05:02:42,442 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,442 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-22 05:02:42,443 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,443 INFO L185 CegarLoopUtils]: At program point L15-14(lines 52 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-22 05:02:42,443 INFO L192 CegarLoopUtils]: At program point L65(lines 22 66) the Hoare annotation is: true [2020-12-22 05:02:42,443 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,443 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:02:42,443 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2020-12-22 05:02:42,443 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:02:42,443 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,444 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:02:42,445 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:02:42,445 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:02:42,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:02:42 BoogieIcfgContainer [2020-12-22 05:02:42,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:02:42,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:02:42,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:02:42,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:02:42,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:02:36" (3/4) ... [2020-12-22 05:02:42,479 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:02:42,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-22 05:02:42,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:02:42,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:02:42,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:02:42,546 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c-witness.graphml [2020-12-22 05:02:42,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:02:42,548 INFO L168 Benchmark]: Toolchain (without parser) took 7384.41 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 126.9 MB in the beginning and 124.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,548 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 95.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:02:42,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,550 INFO L168 Benchmark]: Boogie Preprocessor took 41.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,551 INFO L168 Benchmark]: RCFGBuilder took 639.22 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,551 INFO L168 Benchmark]: TraceAbstraction took 6261.67 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 129.2 MB in the beginning and 128.4 MB in the end (delta: 808.6 kB). Peak memory consumption was 108.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,552 INFO L168 Benchmark]: Witness Printer took 74.26 ms. Allocated memory is still 198.2 MB. Free memory was 128.4 MB in the beginning and 124.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:02:42,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 95.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 639.22 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6261.67 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 129.2 MB in the beginning and 128.4 MB in the end (delta: 808.6 kB). Peak memory consumption was 108.3 MB. Max. memory is 8.0 GB. * Witness Printer took 74.26 ms. Allocated memory is still 198.2 MB. Free memory was 128.4 MB in the beginning and 124.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((q == 1 && y <= 1) && 1 == cond) && y <= x) && 2 * r < x) && x <= r + y) && cond == 1) && 1 <= b) || (((((((x <= 1 && 1 <= y) && y <= 1) && 1 == cond) && 0 <= x) && r == x) && q == 0) && cond == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((r <= 1 && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) && 1 <= b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((r <= 1 && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) && 1 <= b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((q == 1 && y <= 1) && y <= x) && 2 * r < x) && x <= r + y) && cond == 1) && 1 <= b) || ((((((x <= 1 && 1 <= y) && y <= 1) && 0 <= x) && r == x) && q == 0) && cond == 1) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((r <= 1 && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) && 1 <= b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((r <= 1 && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) && 1 <= b - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((q == 1 && a == 1) && y <= 1) && 1 == cond) && y <= x) && 2 * r < x) && x <= r + y) && cond == 1) && b == y) || ((((((((1 <= y && x <= 1) && y <= 1) && 0 <= x) && a == 0) && r == x) && q == 0) && cond == 1) && b == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 823 SDslu, 141 SDs, 0 SdLazy, 322 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=4, 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, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 22 NumberOfFragments, 280 HoareAnnotationTreeSize, 10 FomulaSimplifications, 387 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 17973 SizeOfPredicates, 52 NumberOfNonLiveVariables, 445 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/6 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...