/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/geo1-u_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:20:46,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:20:46,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:20:46,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:20:46,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:20:46,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:20:46,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:20:46,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:20:46,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:20:46,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:20:46,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:20:46,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:20:46,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:20:46,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:20:46,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:20:46,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:20:46,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:20:46,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:20:46,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:20:46,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:20:46,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:20:46,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:20:46,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:20:46,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:20:46,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:20:46,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:20:46,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:20:46,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:20:46,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:20:46,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:20:46,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:20:46,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:20:46,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:20:46,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:20:46,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:20:46,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:20:46,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:20:46,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:20:46,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:20:46,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:20:46,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:20:46,318 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:20:46,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:20:46,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:20:46,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:20:46,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:20:46,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:20:46,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:20:46,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:20:46,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:20:46,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:20:46,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:20:46,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:20:46,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:20:46,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:20:46,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:20:46,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:20:46,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:20:46,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:20:46,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:20:46,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:20:46,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:20:46,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:20:46,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:20:46,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:20:46,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:20:46,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:20:46,721 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:20:46,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2020-12-22 05:20:46,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429a60a92/4a144ada704243d280cf4ae1cd7f1b8e/FLAGa1e8d9c73 [2020-12-22 05:20:47,497 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:20:47,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2020-12-22 05:20:47,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429a60a92/4a144ada704243d280cf4ae1cd7f1b8e/FLAGa1e8d9c73 [2020-12-22 05:20:47,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429a60a92/4a144ada704243d280cf4ae1cd7f1b8e [2020-12-22 05:20:47,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:20:47,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:20:47,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:20:47,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:20:47,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:20:47,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d5f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47, skipping insertion in model container [2020-12-22 05:20:47,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:20:47,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:20:47,733 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/geo1-u_unwindbound2.c[555,568] [2020-12-22 05:20:47,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:20:47,757 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:20:47,772 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/geo1-u_unwindbound2.c[555,568] [2020-12-22 05:20:47,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:20:47,794 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:20:47,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47 WrapperNode [2020-12-22 05:20:47,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:20:47,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:20:47,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:20:47,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:20:47,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:20:47,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:20:47,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:20:47,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:20:47,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (1/1) ... [2020-12-22 05:20:47,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:20:47,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:20:47,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:20:47,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:20:47,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (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 05:20:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:20:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:20:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:20:47,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:20:48,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:20:48,299 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 05:20:48,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:20:48 BoogieIcfgContainer [2020-12-22 05:20:48,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:20:48,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:20:48,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:20:48,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:20:48,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:20:47" (1/3) ... [2020-12-22 05:20:48,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705a64f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:20:48, skipping insertion in model container [2020-12-22 05:20:48,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:47" (2/3) ... [2020-12-22 05:20:48,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705a64f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:20:48, skipping insertion in model container [2020-12-22 05:20:48,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:20:48" (3/3) ... [2020-12-22 05:20:48,310 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound2.c [2020-12-22 05:20:48,317 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:20:48,322 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:20:48,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:20:48,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:20:48,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:20:48,411 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:20:48,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:20:48,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:20:48,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:20:48,412 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:20:48,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:20:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 05:20:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:20:48,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:48,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:20:48,470 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:48,477 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:20:48,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:48,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262868341] [2020-12-22 05:20:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:48,597 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:48,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023422535] [2020-12-22 05:20:48,599 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 05:20:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:20:48,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 05:20:48,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:48,794 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 05:20:48,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262868341] [2020-12-22 05:20:48,795 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:48,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023422535] [2020-12-22 05:20:48,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:48,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:20:48,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687083622] [2020-12-22 05:20:48,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:20:48,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:48,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:20:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:20:48,820 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-22 05:20:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:48,929 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-12-22 05:20:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:20:48,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:20:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:48,942 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:20:48,942 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 05:20:48,945 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 05:20:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 05:20:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-12-22 05:20:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 05:20:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-22 05:20:48,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-22 05:20:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:48,980 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-22 05:20:48,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:20:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-22 05:20:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:20:48,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:48,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:49,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:20:49,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2020-12-22 05:20:49,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:49,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568332101] [2020-12-22 05:20:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:49,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:49,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39095069] [2020-12-22 05:20:49,219 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 05:20:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:20:49,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:20:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:49,309 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 05:20:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568332101] [2020-12-22 05:20:49,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39095069] [2020-12-22 05:20:49,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:49,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:20:49,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961254305] [2020-12-22 05:20:49,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:20:49,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:49,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:20:49,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:20:49,314 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-12-22 05:20:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:49,328 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-22 05:20:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:20:49,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 05:20:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:49,329 INFO L225 Difference]: With dead ends: 19 [2020-12-22 05:20:49,330 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 05:20:49,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:20:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 05:20:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-22 05:20:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 05:20:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-22 05:20:49,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2020-12-22 05:20:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:49,335 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-22 05:20:49,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:20:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-22 05:20:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:20:49,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:49,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:49,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:49,552 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2020-12-22 05:20:49,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925373028] [2020-12-22 05:20:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:49,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:49,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708148449] [2020-12-22 05:20:49,569 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 05:20:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:20:49,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:20:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:20:49,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:20:49,687 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:20:49,687 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:20:49,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:49,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:20:49 BoogieIcfgContainer [2020-12-22 05:20:49,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:20:49,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:20:49,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:20:49,936 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:20:49,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:20:48" (3/4) ... [2020-12-22 05:20:49,939 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:20:50,023 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-u_unwindbound2.c-witness.graphml [2020-12-22 05:20:50,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:20:50,030 INFO L168 Benchmark]: Toolchain (without parser) took 2487.53 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 88.1 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,031 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:50,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.77 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 121.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 120.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,033 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 119.5 MB in the end (delta: 889.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:50,036 INFO L168 Benchmark]: RCFGBuilder took 439.37 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 107.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,039 INFO L168 Benchmark]: TraceAbstraction took 1631.41 ms. Allocated memory is still 157.3 MB. Free memory was 106.6 MB in the beginning and 90.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,040 INFO L168 Benchmark]: Witness Printer took 87.85 ms. Allocated memory is still 157.3 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:50,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.77 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 121.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 120.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 119.5 MB in the end (delta: 889.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 439.37 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 107.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1631.41 ms. Allocated memory is still 157.3 MB. Free memory was 106.6 MB in the beginning and 90.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * Witness Printer took 87.85 ms. Allocated memory is still 157.3 MB. Free memory was 90.2 MB in the beginning and 88.1 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: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND TRUE !(c < k) VAL [counter=1] [L45] x = x * (z - 1) [L16] COND TRUE !(cond) VAL [counter=1] [L18] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 4 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...