/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/ps2-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:39:47,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:39:47,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:39:47,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:39:47,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:39:47,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:39:47,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:39:47,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:39:47,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:39:47,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:39:47,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:39:47,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:39:47,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:39:47,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:39:47,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:39:47,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:39:47,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:39:47,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:39:47,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:39:47,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:39:47,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:39:47,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:39:47,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:39:47,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:39:47,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:39:47,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:39:47,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:39:47,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:39:47,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:39:47,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:39:47,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:39:47,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:39:47,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:39:47,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:39:47,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:39:47,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:39:47,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:39:47,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:39:47,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:39:47,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:39:47,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:39:47,480 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:39:47,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:39:47,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:39:47,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:39:47,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:39:47,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:39:47,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:39:47,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:39:47,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:39:47,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:39:47,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:39:47,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:39:47,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:39:47,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:39:47,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:39:47,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:39:47,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:39:47,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:39:47,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:39:47,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:39:47,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:39:47,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:39:47,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:39:47,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:39:47,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:39:47,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:39:47,941 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:39:47,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c [2020-12-22 05:39:48,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f7d6f80/f4bbc5dd768b4051aac665596c6011a8/FLAG331cbef0d [2020-12-22 05:39:48,591 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:39:48,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c [2020-12-22 05:39:48,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f7d6f80/f4bbc5dd768b4051aac665596c6011a8/FLAG331cbef0d [2020-12-22 05:39:48,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f7d6f80/f4bbc5dd768b4051aac665596c6011a8 [2020-12-22 05:39:48,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:39:48,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:39:48,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:48,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:39:48,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:39:48,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:48" (1/1) ... [2020-12-22 05:39:48,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d79cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:48, skipping insertion in model container [2020-12-22 05:39:48,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:48" (1/1) ... [2020-12-22 05:39:48,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:39:48,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:39:49,134 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/ps2-ll_unwindbound2.c[454,467] [2020-12-22 05:39:49,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:49,159 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:39:49,173 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/ps2-ll_unwindbound2.c[454,467] [2020-12-22 05:39:49,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:49,195 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:39:49,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49 WrapperNode [2020-12-22 05:39:49,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:49,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:49,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:39:49,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:39:49,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:49,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:39:49,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:39:49,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:39:49,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (1/1) ... [2020-12-22 05:39:49,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:39:49,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:39:49,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:39:49,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:39:49,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (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 05:39:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:39:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:39:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:39:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:39:49,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:39:49,645 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 05:39:49,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:49 BoogieIcfgContainer [2020-12-22 05:39:49,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:39:49,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:39:49,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:39:49,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:39:49,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:39:48" (1/3) ... [2020-12-22 05:39:49,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dc4ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:49, skipping insertion in model container [2020-12-22 05:39:49,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:49" (2/3) ... [2020-12-22 05:39:49,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dc4ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:49, skipping insertion in model container [2020-12-22 05:39:49,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:49" (3/3) ... [2020-12-22 05:39:49,659 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound2.c [2020-12-22 05:39:49,669 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:39:49,675 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:39:49,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:39:49,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:39:49,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:39:49,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:39:49,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:39:49,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:39:49,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:39:49,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:39:49,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:39:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 05:39:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:39:49,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:49,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:39:49,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:49,828 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:39:49,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133561887] [2020-12-22 05:39:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:49,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:49,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388297834] [2020-12-22 05:39:49,994 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 05:39:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 05:39:50,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:50,272 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 05:39:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133561887] [2020-12-22 05:39:50,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388297834] [2020-12-22 05:39:50,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:50,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:39:50,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762982929] [2020-12-22 05:39:50,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:39:50,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:50,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:39:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:39:50,308 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-22 05:39:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:50,428 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-22 05:39:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:39:50,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:39:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:50,438 INFO L225 Difference]: With dead ends: 44 [2020-12-22 05:39:50,438 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:39:50,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:39:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:39:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-22 05:39:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:39:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-22 05:39:50,476 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-22 05:39:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:50,477 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-22 05:39:50,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:39:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-22 05:39:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:39:50,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:50,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:50,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:39:50,692 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-22 05:39:50,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:50,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100896058] [2020-12-22 05:39:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:50,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:50,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692752639] [2020-12-22 05:39:50,710 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 05:39:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:50,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:39:50,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:50,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100896058] [2020-12-22 05:39:50,924 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:50,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692752639] [2020-12-22 05:39:50,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:50,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:39:50,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456214066] [2020-12-22 05:39:50,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:39:50,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:50,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:39:50,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:39:50,930 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2020-12-22 05:39:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:51,013 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-22 05:39:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:39:51,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:39:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:51,015 INFO L225 Difference]: With dead ends: 29 [2020-12-22 05:39:51,015 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:39:51,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:39:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:39:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-22 05:39:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:39:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-22 05:39:51,029 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-12-22 05:39:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:51,031 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-22 05:39:51,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:39:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-22 05:39:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:39:51,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:51,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:39:51,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:51,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2020-12-22 05:39:51,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:51,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745659516] [2020-12-22 05:39:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:51,261 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:51,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252901304] [2020-12-22 05:39:51,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 05:39:51,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:39:51,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:39:51,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:39:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745659516] [2020-12-22 05:39:51,445 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252901304] [2020-12-22 05:39:51,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:51,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:39:51,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34370212] [2020-12-22 05:39:51,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:39:51,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:51,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:39:51,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:39:51,449 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-12-22 05:39:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:51,495 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-22 05:39:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:39:51,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 05:39:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:51,497 INFO L225 Difference]: With dead ends: 26 [2020-12-22 05:39:51,498 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 05:39:51,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:39:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 05:39:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 05:39:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:39:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-22 05:39:51,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-12-22 05:39:51,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:51,504 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-22 05:39:51,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:39:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-22 05:39:51,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:39:51,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:51,506 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:51,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:51,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:51,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:51,722 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2020-12-22 05:39:51,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:51,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088172076] [2020-12-22 05:39:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:51,738 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:51,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947919288] [2020-12-22 05:39:51,744 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 05:39:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:51,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:39:51,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:52,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088172076] [2020-12-22 05:39:52,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:52,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947919288] [2020-12-22 05:39:52,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:52,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:39:52,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696254456] [2020-12-22 05:39:52,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:39:52,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:39:52,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:39:52,005 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 7 states. [2020-12-22 05:39:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:52,104 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-12-22 05:39:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:39:52,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 05:39:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:52,107 INFO L225 Difference]: With dead ends: 16 [2020-12-22 05:39:52,107 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:39:52,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:39:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:39:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:39:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:39:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:39:52,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-22 05:39:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:52,109 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:39:52,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:39:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:39:52,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:39:52,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:52,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:39:52,436 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:39:52,436 INFO L189 CegarLoopUtils]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-12-22 05:39:52,437 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-22 05:39:52,437 INFO L185 CegarLoopUtils]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ~counter~0)) (and .cse0 (= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 1)) (<= 2 ~counter~0)))) [2020-12-22 05:39:52,437 INFO L189 CegarLoopUtils]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-12-22 05:39:52,437 INFO L189 CegarLoopUtils]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-22 05:39:52,438 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-22 05:39:52,438 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:39:52,438 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:39:52,438 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:39:52,438 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-22 05:39:52,439 INFO L189 CegarLoopUtils]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-22 05:39:52,439 INFO L185 CegarLoopUtils]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 1) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0)))) [2020-12-22 05:39:52,439 INFO L189 CegarLoopUtils]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2020-12-22 05:39:52,439 INFO L192 CegarLoopUtils]: At program point L39(lines 18 40) the Hoare annotation is: true [2020-12-22 05:39:52,439 INFO L192 CegarLoopUtils]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-12-22 05:39:52,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:39:52 BoogieIcfgContainer [2020-12-22 05:39:52,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:39:52,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:39:52,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:39:52,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:39:52,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:49" (3/4) ... [2020-12-22 05:39:52,464 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:39:52,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 05:39:52,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:39:52,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:39:52,476 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:39:52,519 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps2-ll_unwindbound2.c-witness.graphml [2020-12-22 05:39:52,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:39:52,521 INFO L168 Benchmark]: Toolchain (without parser) took 3568.30 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.4 MB in the beginning and 151.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,522 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:39:52,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.65 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 121.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.38 ms. Allocated memory is still 156.2 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,524 INFO L168 Benchmark]: Boogie Preprocessor took 23.13 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 119.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,525 INFO L168 Benchmark]: RCFGBuilder took 387.94 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 107.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,526 INFO L168 Benchmark]: TraceAbstraction took 2809.26 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.7 MB in the beginning and 153.8 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:39:52,526 INFO L168 Benchmark]: Witness Printer took 60.15 ms. Allocated memory is still 187.7 MB. Free memory was 153.8 MB in the beginning and 151.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:39:52,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.65 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 121.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.38 ms. Allocated memory is still 156.2 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.13 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 119.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.94 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 107.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2809.26 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.7 MB in the beginning and 153.8 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 60.15 ms. Allocated memory is still 187.7 MB. Free memory was 153.8 MB in the beginning and 151.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 == cond && y == x) && y == 1) && 2 <= counter) || (((1 <= counter && 1 == cond) && x == 0) && y == 0) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((1 <= counter && 1 == cond) && y == x) && y == 1) || ((x == 0 && y == 0) && 0 <= counter)) || (((1 == cond && y == 2) && x == y + 1) && 2 <= counter) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 45 SDslu, 78 SDs, 0 SdLazy, 78 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 68 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 15 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 8/21 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...