/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/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:46:33,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:46:33,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:46:33,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 06:46:33,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:46:33,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:46:33,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:46:33,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:46:33,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:46:33,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:46:33,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:46:33,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:46:33,503 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:46:33,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:46:33,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:46:33,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:46:33,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:46:33,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:46:33,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:46:33,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:46:33,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:46:33,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:46:33,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:46:33,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:46:33,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:46:33,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:46:33,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:46:33,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:46:33,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:46:33,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:46:33,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:46:33,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:46:33,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:46:33,508 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:46:33,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:46:33,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:46:33,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:46:33,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:46:33,954 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:46:33,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_03-1.c [2020-12-23 06:46:34,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/78fe0eb68/1ef458ffd9454d599ac1fbb0b6e8ebfc/FLAGd518a3702 [2020-12-23 06:46:34,627 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:46:34,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/terminator_03-1.c [2020-12-23 06:46:34,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/78fe0eb68/1ef458ffd9454d599ac1fbb0b6e8ebfc/FLAGd518a3702 [2020-12-23 06:46:34,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/78fe0eb68/1ef458ffd9454d599ac1fbb0b6e8ebfc [2020-12-23 06:46:35,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:46:35,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:46:35,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:46:35,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:46:35,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:46:35,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5902f3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35, skipping insertion in model container [2020-12-23 06:46:35,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:46:35,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:46:35,196 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/terminator_03-1.c[327,340] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 06:46:35,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:46:35,225 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:46:35,238 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/terminator_03-1.c[327,340] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 06:46:35,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:46:35,256 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:46:35,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35 WrapperNode [2020-12-23 06:46:35,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:46:35,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:46:35,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:46:35,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:46:35,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:46:35,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:46:35,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:46:35,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:46:35,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... [2020-12-23 06:46:35,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:46:35,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:46:35,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:46:35,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:46:35,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:46:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:46:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:46:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:46:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:46:35,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:46:35,641 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 06:46:35,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:46:35 BoogieIcfgContainer [2020-12-23 06:46:35,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:46:35,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:46:35,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:46:35,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:46:35,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:46:35" (1/3) ... [2020-12-23 06:46:35,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4f94bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:46:35, skipping insertion in model container [2020-12-23 06:46:35,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:46:35" (2/3) ... [2020-12-23 06:46:35,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4f94bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:46:35, skipping insertion in model container [2020-12-23 06:46:35,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:46:35" (3/3) ... [2020-12-23 06:46:35,653 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-12-23 06:46:35,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:46:35,665 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:46:35,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:46:35,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:46:35,718 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:46:35,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:46:35,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:46:35,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:46:35,718 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:46:35,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:46:35,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:46:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-23 06:46:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 06:46:35,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:46:35,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 06:46:35,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:46:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:46:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2020-12-23 06:46:35,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:46:35,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455808218] [2020-12-23 06:46:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:46:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:46:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:46:36,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455808218] [2020-12-23 06:46:36,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:46:36,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:46:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067567301] [2020-12-23 06:46:36,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:46:36,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:46:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:46:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:46:36,104 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-12-23 06:46:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:46:36,213 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-12-23 06:46:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:46:36,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 06:46:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:46:36,233 INFO L225 Difference]: With dead ends: 26 [2020-12-23 06:46:36,233 INFO L226 Difference]: Without dead ends: 8 [2020-12-23 06:46:36,242 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 [2020-12-23 06:46:36,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-23 06:46:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-23 06:46:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-23 06:46:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-23 06:46:36,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-23 06:46:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:46:36,281 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-23 06:46:36,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:46:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-23 06:46:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 06:46:36,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:46:36,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:46:36,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:46:36,284 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:46:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:46:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1805064685, now seen corresponding path program 1 times [2020-12-23 06:46:36,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:46:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656666876] [2020-12-23 06:46:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:46:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:46:36,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:46:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:46:36,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:46:36,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:46:36,406 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:46:36,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:46:36,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:46:36 BoogieIcfgContainer [2020-12-23 06:46:36,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:46:36,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:46:36,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:46:36,436 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:46:36,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:46:35" (3/4) ... [2020-12-23 06:46:36,439 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 06:46:36,483 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/terminator_03-1.c-witness.graphml [2020-12-23 06:46:36,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:46:36,485 INFO L168 Benchmark]: Toolchain (without parser) took 1476.34 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 114.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,486 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:46:36,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.20 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 119.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,489 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 116.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,490 INFO L168 Benchmark]: RCFGBuilder took 323.86 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 105.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,491 INFO L168 Benchmark]: TraceAbstraction took 789.90 ms. Allocated memory is still 154.1 MB. Free memory was 105.3 MB in the beginning and 116.0 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:46:36,491 INFO L168 Benchmark]: Witness Printer took 47.67 ms. Allocated memory is still 154.1 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:46:36,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.20 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 119.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.45 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 116.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 323.86 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 105.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 789.90 ms. Allocated memory is still 154.1 MB. Free memory was 105.3 MB in the beginning and 116.0 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 47.67 ms. Allocated memory is still 154.1 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L16] int y=__VERIFIER_nondet_int(); [L18] COND TRUE y>0 [L20] COND FALSE !(x<100) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 12 SDslu, 15 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...