/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/ps3-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:40:07,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:40:07,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:40:07,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:40:07,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:40:07,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:40:07,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:40:07,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:40:07,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:40:07,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:40:07,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:40:07,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:40:07,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:40:07,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:40:07,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:40:07,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:40:07,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:40:07,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:40:07,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:40:07,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:40:07,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:40:07,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:40:07,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:40:07,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:40:07,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:40:07,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:40:08,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:40:08,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:40:08,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:40:08,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:40:08,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:40:08,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:40:08,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:40:08,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:40:08,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:40:08,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:40:08,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:40:08,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:40:08,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:40:08,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:40:08,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:40:08,072 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:40:08,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:40:08,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:40:08,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:40:08,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:40:08,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:40:08,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:40:08,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:40:08,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:40:08,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:40:08,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:40:08,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:40:08,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:40:08,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:40:08,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:40:08,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:40:08,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:40:08,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:40:08,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:40:08,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:40:08,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:40:08,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:40:08,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:40:08,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:40:08,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:40:08,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:40:08,537 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:40:08,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2020-12-22 05:40:08,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fe311375/2176609b7c924142817c007ea97da41e/FLAGca23b00a0 [2020-12-22 05:40:09,153 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:40:09,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2020-12-22 05:40:09,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fe311375/2176609b7c924142817c007ea97da41e/FLAGca23b00a0 [2020-12-22 05:40:09,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fe311375/2176609b7c924142817c007ea97da41e [2020-12-22 05:40:09,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:40:09,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:40:09,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:09,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:40:09,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:40:09,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b854b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09, skipping insertion in model container [2020-12-22 05:40:09,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:40:09,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:40:09,728 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/ps3-ll_unwindbound1.c[458,471] [2020-12-22 05:40:09,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:09,757 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:40:09,773 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/ps3-ll_unwindbound1.c[458,471] [2020-12-22 05:40:09,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:09,798 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:40:09,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09 WrapperNode [2020-12-22 05:40:09,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:09,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:09,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:40:09,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:40:09,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:09,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:40:09,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:40:09,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:40:09,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (1/1) ... [2020-12-22 05:40:09,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:40:09,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:40:09,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:40:09,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:40:09,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (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 05:40:10,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:40:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:40:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:40:10,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:40:10,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:40:10,331 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 05:40:10,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:10 BoogieIcfgContainer [2020-12-22 05:40:10,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:40:10,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:40:10,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:40:10,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:40:10,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:40:09" (1/3) ... [2020-12-22 05:40:10,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287af07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:10, skipping insertion in model container [2020-12-22 05:40:10,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:09" (2/3) ... [2020-12-22 05:40:10,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287af07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:10, skipping insertion in model container [2020-12-22 05:40:10,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:10" (3/3) ... [2020-12-22 05:40:10,359 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound1.c [2020-12-22 05:40:10,377 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:40:10,382 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:40:10,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:40:10,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:40:10,456 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:40:10,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:40:10,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:40:10,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:40:10,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:40:10,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:40:10,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:40:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 05:40:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:40:10,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:10,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:40:10,483 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:40:10,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:10,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479107599] [2020-12-22 05:40:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:10,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:10,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191699336] [2020-12-22 05:40:10,626 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 05:40:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:10,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 05:40:10,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:10,826 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 05:40:10,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479107599] [2020-12-22 05:40:10,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:10,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191699336] [2020-12-22 05:40:10,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:10,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:40:10,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161803507] [2020-12-22 05:40:10,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:40:10,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:10,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:40:10,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:40:10,858 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-22 05:40:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:10,967 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-22 05:40:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:40:10,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:40:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:10,982 INFO L225 Difference]: With dead ends: 44 [2020-12-22 05:40:10,982 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:40:10,986 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 05:40:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:40:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-22 05:40:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:40:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-22 05:40:11,027 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-22 05:40:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:11,028 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-22 05:40:11,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:40:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-22 05:40:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:40:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:11,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:40:11,243 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-22 05:40:11,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:11,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126949184] [2020-12-22 05:40:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:11,262 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:11,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321603728] [2020-12-22 05:40:11,263 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 05:40:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:11,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:40:11,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:40:11,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126949184] [2020-12-22 05:40:11,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:11,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321603728] [2020-12-22 05:40:11,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:11,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:40:11,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980212016] [2020-12-22 05:40:11,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:40:11,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:11,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:40:11,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:40:11,448 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-12-22 05:40:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:11,496 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-22 05:40:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:40:11,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 05:40:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:11,498 INFO L225 Difference]: With dead ends: 22 [2020-12-22 05:40:11,498 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 05:40:11,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:40:11,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 05:40:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-22 05:40:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 05:40:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-22 05:40:11,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-12-22 05:40:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:11,504 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-22 05:40:11,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:40:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-22 05:40:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:40:11,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:11,506 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:11,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:11,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2020-12-22 05:40:11,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:11,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361561545] [2020-12-22 05:40:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:11,734 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:11,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279732895] [2020-12-22 05:40:11,735 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 05:40:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:11,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:40:11,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:40:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361561545] [2020-12-22 05:40:11,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279732895] [2020-12-22 05:40:11,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:11,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:40:11,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918970683] [2020-12-22 05:40:11,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:40:11,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:40:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:40:11,941 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 6 states. [2020-12-22 05:40:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:11,989 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-22 05:40:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:40:11,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:40:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:11,992 INFO L225 Difference]: With dead ends: 12 [2020-12-22 05:40:11,992 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:40:11,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 05:40:11,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:40:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:40:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:40:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:40:11,994 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-22 05:40:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:11,995 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:40:11,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:40:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:40:11,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:40:12,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:12,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:40:12,302 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:40:12,302 INFO L189 CegarLoopUtils]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-12-22 05:40:12,303 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-22 05:40:12,303 INFO L185 CegarLoopUtils]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (<= 1 ~counter~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~y~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ~counter~0))) [2020-12-22 05:40:12,303 INFO L189 CegarLoopUtils]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-12-22 05:40:12,304 INFO L189 CegarLoopUtils]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-22 05:40:12,304 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-22 05:40:12,304 INFO L192 CegarLoopUtils]: At program point L38(lines 18 39) the Hoare annotation is: true [2020-12-22 05:40:12,304 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:40:12,304 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:40:12,304 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:40:12,305 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-22 05:40:12,305 INFO L189 CegarLoopUtils]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-22 05:40:12,305 INFO L185 CegarLoopUtils]: At program point L10-2(lines 30 31) the Hoare annotation is: (and (<= 1 ~counter~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0)) [2020-12-22 05:40:12,305 INFO L189 CegarLoopUtils]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2020-12-22 05:40:12,306 INFO L192 CegarLoopUtils]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-12-22 05:40:12,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:40:12 BoogieIcfgContainer [2020-12-22 05:40:12,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:40:12,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:40:12,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:40:12,329 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:40:12,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:10" (3/4) ... [2020-12-22 05:40:12,333 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:40:12,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 05:40:12,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:40:12,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:40:12,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:40:12,416 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps3-ll_unwindbound1.c-witness.graphml [2020-12-22 05:40:12,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:40:12,419 INFO L168 Benchmark]: Toolchain (without parser) took 2884.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 62.5 MB in the end (delta: 63.8 MB). Peak memory consumption was 64.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,420 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:12,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,423 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,424 INFO L168 Benchmark]: RCFGBuilder took 464.94 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 101.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,425 INFO L168 Benchmark]: TraceAbstraction took 1988.08 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 64.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,425 INFO L168 Benchmark]: Witness Printer took 88.67 ms. Allocated memory is still 151.0 MB. Free memory was 64.6 MB in the beginning and 62.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:12,430 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 is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 464.94 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 101.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1988.08 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 64.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. * Witness Printer took 88.67 ms. Allocated memory is still 151.0 MB. Free memory was 64.6 MB in the beginning and 62.5 MB in the end (delta: 2.1 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 <= counter && 1 == cond) && x == 0) && y == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((1 <= counter && 1 == cond) && x == y * y) && y == 1) || ((x == 0 && y == 0) && 0 <= counter) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 27 SDslu, 43 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 932 SizeOfPredicates, 9 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/5 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...