/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_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:40:27,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:40:27,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:40:27,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:40:27,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:40:27,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:40:27,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:40:27,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:40:27,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:40:27,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:40:27,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:40:27,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:40:27,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:40:27,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:40:27,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:40:27,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:40:27,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:40:27,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:40:27,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:40:27,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:40:27,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:40:27,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:40:27,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:40:27,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:40:27,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:40:27,603 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:40:27,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:40:27,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:40:27,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:40:27,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:40:27,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:40:27,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:40:27,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:40:27,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:40:27,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:40:27,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:40:27,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:40:27,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:40:27,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:40:27,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:40:27,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:40:27,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:40:27,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:40:27,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:40:27,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:40:27,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:40:27,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:40:27,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:40:27,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:40:28,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:40:28,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:40:28,002 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:40:28,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound50.c [2020-12-22 05:40:28,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176d9fb15/f33a1da60a0946b6bd69dd59c29845b3/FLAGd8cf19296 [2020-12-22 05:40:28,626 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:40:28,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound50.c [2020-12-22 05:40:28,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176d9fb15/f33a1da60a0946b6bd69dd59c29845b3/FLAGd8cf19296 [2020-12-22 05:40:29,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176d9fb15/f33a1da60a0946b6bd69dd59c29845b3 [2020-12-22 05:40:29,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:40:29,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:40:29,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:29,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:40:29,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:40:29,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34910fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29, skipping insertion in model container [2020-12-22 05:40:29,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:40:29,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:40:29,249 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_valuebound50.c[458,471] [2020-12-22 05:40:29,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:29,273 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:40:29,287 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_valuebound50.c[458,471] [2020-12-22 05:40:29,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:29,308 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:40:29,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29 WrapperNode [2020-12-22 05:40:29,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:29,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:29,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:40:29,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:40:29,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:29,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:40:29,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:40:29,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:40:29,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (1/1) ... [2020-12-22 05:40:29,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:40:29,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:40:29,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:40:29,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:40:29,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (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 05:40:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:40:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:40:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:40:29,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:40:29,780 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-22 05:40:29,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:29 BoogieIcfgContainer [2020-12-22 05:40:29,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:40:29,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:40:29,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:40:29,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:40:29,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:40:29" (1/3) ... [2020-12-22 05:40:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16249f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:29, skipping insertion in model container [2020-12-22 05:40:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:29" (2/3) ... [2020-12-22 05:40:29,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16249f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:29, skipping insertion in model container [2020-12-22 05:40:29,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:29" (3/3) ... [2020-12-22 05:40:29,792 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound50.c [2020-12-22 05:40:29,799 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:40:29,804 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:40:29,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:40:29,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:40:29,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:40:29,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:40:29,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:40:29,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:40:29,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:40:29,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:40:29,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:40:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 05:40:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:40:29,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:29,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:29,972 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 05:40:29,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:29,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872779368] [2020-12-22 05:40:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:30,149 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 05:40:30,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872779368] [2020-12-22 05:40:30,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:30,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:40:30,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578122452] [2020-12-22 05:40:30,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:40:30,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:30,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:40:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:40:30,175 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-22 05:40:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:30,192 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2020-12-22 05:40:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:40:30,194 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 05:40:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:30,203 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:40:30,204 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 05:40:30,207 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 05:40:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 05:40:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 05:40:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 05:40:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-22 05:40:30,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-12-22 05:40:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:30,243 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-22 05:40:30,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:40:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-22 05:40:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:40:30,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:30,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:30,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:40:30,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:30,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 05:40:30,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:30,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868037462] [2020-12-22 05:40:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:30,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:30,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526808549] [2020-12-22 05:40:30,265 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 05:40:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:30,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:40:30,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:30,456 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 05:40:30,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868037462] [2020-12-22 05:40:30,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:30,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526808549] [2020-12-22 05:40:30,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:30,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:40:30,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928373294] [2020-12-22 05:40:30,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:40:30,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:30,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:40:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:40:30,462 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-12-22 05:40:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:30,666 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-22 05:40:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:40:30,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 05:40:30,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:30,668 INFO L225 Difference]: With dead ends: 23 [2020-12-22 05:40:30,668 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 05:40:30,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:40:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 05:40:30,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-22 05:40:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:40:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 05:40:30,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-12-22 05:40:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:30,675 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 05:40:30,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:40:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 05:40:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:40:30,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:30,676 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:30,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:40:30,892 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2020-12-22 05:40:30,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:30,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304996464] [2020-12-22 05:40:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:30,908 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:30,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136834762] [2020-12-22 05:40:30,909 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 05:40:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:30,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:40:31,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:31,079 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 05:40:31,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304996464] [2020-12-22 05:40:31,080 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:31,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136834762] [2020-12-22 05:40:31,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:31,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:40:31,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478135021] [2020-12-22 05:40:31,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:40:31,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:40:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:40:31,083 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-12-22 05:40:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:31,249 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-22 05:40:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:40:31,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:40:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:31,251 INFO L225 Difference]: With dead ends: 26 [2020-12-22 05:40:31,251 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 05:40:31,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:40:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 05:40:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-22 05:40:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 05:40:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-22 05:40:31,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-12-22 05:40:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:31,259 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-22 05:40:31,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:40:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-22 05:40:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:40:31,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:31,260 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:31,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:31,475 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2020-12-22 05:40:31,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:31,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618336570] [2020-12-22 05:40:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:31,493 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:31,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579233000] [2020-12-22 05:40:31,493 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 05:40:31,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:40:31,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:40:31,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 05:40:31,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:31,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618336570] [2020-12-22 05:40:31,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:31,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579233000] [2020-12-22 05:40:31,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:40:31,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:31,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:40:31,622 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:40:31,622 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:40:31,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:31,846 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:40:31,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:40:31 BoogieIcfgContainer [2020-12-22 05:40:31,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:40:31,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:40:31,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:40:31,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:40:31,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:29" (3/4) ... [2020-12-22 05:40:31,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:40:31,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:40:31,854 INFO L168 Benchmark]: Toolchain (without parser) took 2824.06 ms. Allocated memory is still 163.6 MB. Free memory was 138.5 MB in the beginning and 69.8 MB in the end (delta: 68.6 MB). Peak memory consumption was 69.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,855 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 135.0 MB in the end (delta: 152.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:31,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.72 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 128.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 127.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,858 INFO L168 Benchmark]: Boogie Preprocessor took 24.08 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,859 INFO L168 Benchmark]: RCFGBuilder took 406.94 ms. Allocated memory is still 163.6 MB. Free memory was 126.0 MB in the beginning and 114.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,860 INFO L168 Benchmark]: TraceAbstraction took 2063.64 ms. Allocated memory is still 163.6 MB. Free memory was 113.7 MB in the beginning and 70.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:31,860 INFO L168 Benchmark]: Witness Printer took 3.94 ms. Allocated memory is still 163.6 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:31,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 135.0 MB in the end (delta: 152.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.72 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 128.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 127.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.08 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 406.94 ms. Allocated memory is still 163.6 MB. Free memory was 126.0 MB in the beginning and 114.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2063.64 ms. Allocated memory is still 163.6 MB. Free memory was 113.7 MB in the beginning and 70.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. * Witness Printer took 3.94 ms. Allocated memory is still 163.6 MB. Free memory is still 69.8 MB. There was no memory consumed. 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s 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...