/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_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:40:25,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:40:25,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:40:25,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:40:25,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:40:25,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:40:25,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:40:25,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:40:25,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:40:25,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:40:25,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:40:25,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:40:25,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:40:25,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:40:25,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:40:25,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:40:25,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:40:25,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:40:25,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:40:25,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:40:25,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:40:25,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:40:25,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:40:25,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:40:25,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:40:25,595 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:40:25,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:40:25,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:40:25,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:40:25,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:40:25,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:40:25,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:40:25,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:40:25,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:40:25,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:40:25,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:40:25,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:40:25,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:40:25,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:40:25,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:40:25,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:40:25,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:40:25,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:40:25,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:40:25,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:40:25,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:40:25,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:40:25,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:40:25,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:40:25,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:40:25,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:40:25,973 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:40:25,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound20.c [2020-12-22 05:40:26,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a605264/6c774cdfdcee4c728ec53a27539f2a38/FLAGd895978f2 [2020-12-22 05:40:26,597 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:40:26,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound20.c [2020-12-22 05:40:26,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a605264/6c774cdfdcee4c728ec53a27539f2a38/FLAGd895978f2 [2020-12-22 05:40:27,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a605264/6c774cdfdcee4c728ec53a27539f2a38 [2020-12-22 05:40:27,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:40:27,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:40:27,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:27,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:40:27,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:40:27,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60536869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27, skipping insertion in model container [2020-12-22 05:40:27,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:40:27,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:40:27,242 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_valuebound20.c[458,471] [2020-12-22 05:40:27,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:27,266 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:40:27,280 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_valuebound20.c[458,471] [2020-12-22 05:40:27,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:27,303 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:40:27,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27 WrapperNode [2020-12-22 05:40:27,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:27,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:27,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:40:27,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:40:27,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:27,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:40:27,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:40:27,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:40:27,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (1/1) ... [2020-12-22 05:40:27,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:40:27,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:40:27,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:40:27,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:40:27,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (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 05:40:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:40:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:40:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:40:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:40:27,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:40:27,729 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-22 05:40:27,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:27 BoogieIcfgContainer [2020-12-22 05:40:27,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:40:27,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:40:27,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:40:27,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:40:27,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:40:27" (1/3) ... [2020-12-22 05:40:27,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce889a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:27, skipping insertion in model container [2020-12-22 05:40:27,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:27" (2/3) ... [2020-12-22 05:40:27,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce889a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:27, skipping insertion in model container [2020-12-22 05:40:27,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:27" (3/3) ... [2020-12-22 05:40:27,741 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound20.c [2020-12-22 05:40:27,755 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:40:27,769 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:40:27,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:40:27,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:40:27,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:40:27,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:40:27,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:40:27,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:40:27,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:40:27,859 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:40:27,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:40:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 05:40:27,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:40:27,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:27,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:27,880 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 05:40:27,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:27,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212680144] [2020-12-22 05:40:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:28,130 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 05:40:28,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212680144] [2020-12-22 05:40:28,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:28,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:40:28,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987536677] [2020-12-22 05:40:28,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:40:28,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:28,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:40:28,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:40:28,155 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-22 05:40:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:28,172 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2020-12-22 05:40:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:40:28,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 05:40:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:28,183 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:40:28,183 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 05:40:28,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:40:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 05:40:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 05:40:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 05:40:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-22 05:40:28,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-12-22 05:40:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:28,222 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-22 05:40:28,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:40:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-22 05:40:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:40:28,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:28,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:28,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:40:28,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:28,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 05:40:28,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:28,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961761566] [2020-12-22 05:40:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:28,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:28,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962867883] [2020-12-22 05:40:28,243 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 05:40:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:28,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:40:28,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:28,459 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 05:40:28,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961761566] [2020-12-22 05:40:28,460 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:28,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962867883] [2020-12-22 05:40:28,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:28,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:40:28,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492348122] [2020-12-22 05:40:28,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:40:28,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:28,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:40:28,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:40:28,464 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-12-22 05:40:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:28,768 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-22 05:40:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:40:28,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 05:40:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:28,770 INFO L225 Difference]: With dead ends: 23 [2020-12-22 05:40:28,770 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 05:40:28,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:40:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 05:40:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-22 05:40:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:40:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 05:40:28,777 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-12-22 05:40:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:28,777 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 05:40:28,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:40:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 05:40:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:40:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:28,778 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:28,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:40:28,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2020-12-22 05:40:28,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:28,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103683496] [2020-12-22 05:40:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:29,014 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:29,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028232119] [2020-12-22 05:40:29,015 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 05:40:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:29,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:40:29,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:29,126 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 05:40:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103683496] [2020-12-22 05:40:29,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028232119] [2020-12-22 05:40:29,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:29,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:40:29,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35601397] [2020-12-22 05:40:29,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:40:29,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:29,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:40:29,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:40:29,131 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-12-22 05:40:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:29,246 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-22 05:40:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:40:29,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:40:29,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:29,248 INFO L225 Difference]: With dead ends: 26 [2020-12-22 05:40:29,248 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 05:40:29,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:40:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 05:40:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-22 05:40:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 05:40:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-22 05:40:29,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-12-22 05:40:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:29,255 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-22 05:40:29,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:40:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-22 05:40:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:40:29,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:29,257 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:29,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:29,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:29,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:29,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2020-12-22 05:40:29,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:29,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253926327] [2020-12-22 05:40:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:29,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885143552] [2020-12-22 05:40:29,489 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 05:40:29,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:40:29,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:40:29,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 05:40:29,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:29,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253926327] [2020-12-22 05:40:29,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:29,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885143552] [2020-12-22 05:40:29,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:40:29,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:29,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:40:29,609 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:40:29,609 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:40:29,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:29,834 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:40:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:40:29 BoogieIcfgContainer [2020-12-22 05:40:29,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:40:29,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:40:29,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:40:29,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:40:29,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:27" (3/4) ... [2020-12-22 05:40:29,841 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:40:29,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:40:29,844 INFO L168 Benchmark]: Toolchain (without parser) took 2829.28 ms. Allocated memory is still 162.5 MB. Free memory was 137.3 MB in the beginning and 72.8 MB in the end (delta: 64.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,844 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:29,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.98 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.81 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 126.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,847 INFO L168 Benchmark]: Boogie Preprocessor took 21.62 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 125.0 MB in the end (delta: 789.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,848 INFO L168 Benchmark]: RCFGBuilder took 366.20 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 112.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,849 INFO L168 Benchmark]: TraceAbstraction took 2102.37 ms. Allocated memory is still 162.5 MB. Free memory was 112.4 MB in the beginning and 73.3 MB in the end (delta: 39.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,850 INFO L168 Benchmark]: Witness Printer took 6.10 ms. Allocated memory is still 162.5 MB. Free memory was 73.3 MB in the beginning and 72.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:29,856 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 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.98 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.81 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 126.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.62 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 125.0 MB in the end (delta: 789.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.20 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 112.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2102.37 ms. Allocated memory is still 162.5 MB. Free memory was 112.4 MB in the beginning and 73.3 MB in the end (delta: 39.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Witness Printer took 6.10 ms. Allocated memory is still 162.5 MB. Free memory was 73.3 MB in the beginning and 72.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] short k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] COND TRUE 1 [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 41 SDslu, 35 SDs, 0 SdLazy, 45 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 SizeOfPredicates, 12 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...