/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_01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:21:21,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:21:21,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:21:21,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:21:21,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:21:21,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:21:21,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:21:21,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:21:21,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:21:21,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:21:21,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:21:21,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:21:21,509 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:21:21,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:21:21,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:21:21,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:21:21,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:21:21,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:21:21,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:21:21,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:21:21,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:21:21,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:21:21,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:21:21,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:21:21,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:21:21,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:21:21,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:21:21,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:21:21,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:21:21,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:21:21,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:21:21,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:21:21,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:21:21,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:21:21,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:21:22,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:21:22,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:21:22,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:21:22,040 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:21:22,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_01.c [2020-12-22 04:21:22,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1614262c/19c042a0d72d420d933ddc90584be9e9/FLAG495763fb7 [2020-12-22 04:21:22,847 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:21:22,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_01.c [2020-12-22 04:21:22,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1614262c/19c042a0d72d420d933ddc90584be9e9/FLAG495763fb7 [2020-12-22 04:21:23,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1614262c/19c042a0d72d420d933ddc90584be9e9 [2020-12-22 04:21:23,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:21:23,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:21:23,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:23,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:21:23,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:21:23,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b638b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23, skipping insertion in model container [2020-12-22 04:21:23,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:21:23,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:21:23,385 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/loops/terminator_01.c[325,338] [2020-12-22 04:21:23,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:23,410 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:21:23,423 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/loops/terminator_01.c[325,338] [2020-12-22 04:21:23,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:23,443 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:21:23,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23 WrapperNode [2020-12-22 04:21:23,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:23,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:23,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:21:23,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:21:23,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:23,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:21:23,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:21:23,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:21:23,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (1/1) ... [2020-12-22 04:21:23,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:21:23,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:21:23,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:21:23,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:21:23,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (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 04:21:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:21:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:21:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 04:21:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:21:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:21:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 04:21:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 04:21:24,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:21:24,026 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:21:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:24 BoogieIcfgContainer [2020-12-22 04:21:24,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:21:24,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:21:24,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:21:24,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:21:24,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:21:23" (1/3) ... [2020-12-22 04:21:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fece789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:24, skipping insertion in model container [2020-12-22 04:21:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:23" (2/3) ... [2020-12-22 04:21:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fece789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:24, skipping insertion in model container [2020-12-22 04:21:24,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:24" (3/3) ... [2020-12-22 04:21:24,054 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-12-22 04:21:24,076 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:21:24,093 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:21:24,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:21:24,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:21:24,240 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:21:24,240 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:21:24,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:21:24,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:21:24,241 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:21:24,241 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:21:24,241 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:21:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-22 04:21:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:21:24,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:24,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:21:24,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:24,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:24,276 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2020-12-22 04:21:24,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:24,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391830082] [2020-12-22 04:21:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:21:24,470 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 04:21:24,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391830082] [2020-12-22 04:21:24,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:21:24,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:21:24,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449481768] [2020-12-22 04:21:24,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:21:24,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:21:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:21:24,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:21:24,497 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-12-22 04:21:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:21:24,514 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-22 04:21:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:21:24,517 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:21:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:21:24,527 INFO L225 Difference]: With dead ends: 20 [2020-12-22 04:21:24,527 INFO L226 Difference]: Without dead ends: 8 [2020-12-22 04:21:24,531 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 04:21:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-22 04:21:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-22 04:21:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-22 04:21:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-22 04:21:24,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-22 04:21:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:21:24,573 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-22 04:21:24,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:21:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-22 04:21:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:21:24,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:24,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:21:24,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:21:24,575 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1806847180, now seen corresponding path program 1 times [2020-12-22 04:21:24,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:24,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229444477] [2020-12-22 04:21:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:24,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:24,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:24,652 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:21:24,653 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:21:24,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:21:24,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:21:24 BoogieIcfgContainer [2020-12-22 04:21:24,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:21:24,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:21:24,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:21:24,683 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:21:24,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:24" (3/4) ... [2020-12-22 04:21:24,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:21:24,729 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/terminator_01.c-witness.graphml [2020-12-22 04:21:24,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:21:24,732 INFO L168 Benchmark]: Toolchain (without parser) took 1526.84 ms. Allocated memory is still 157.3 MB. Free memory was 132.6 MB in the beginning and 119.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,733 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:24,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.71 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 123.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.74 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,736 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,737 INFO L168 Benchmark]: RCFGBuilder took 522.77 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 109.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,738 INFO L168 Benchmark]: TraceAbstraction took 645.96 ms. Allocated memory is still 157.3 MB. Free memory was 108.6 MB in the beginning and 121.4 MB in the end (delta: -12.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:24,738 INFO L168 Benchmark]: Witness Printer took 46.75 ms. Allocated memory is still 157.3 MB. Free memory was 120.9 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:24,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.71 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 123.2 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 36.74 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 522.77 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 109.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 645.96 ms. Allocated memory is still 157.3 MB. Free memory was 108.6 MB in the beginning and 121.4 MB in the end (delta: -12.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 46.75 ms. Allocated memory is still 157.3 MB. Free memory was 120.9 MB in the beginning and 119.3 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(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; [L18] EXPR \read(x) [L18] 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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...