/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/ldv-regression/test29-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:53:04,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:53:04,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:53:04,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:53:04,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:53:04,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:53:04,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:53:04,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:53:04,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:53:04,716 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:53:04,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:53:04,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:53:04,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:53:04,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:53:04,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:53:04,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:53:04,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:53:04,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:53:04,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:53:04,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:53:04,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:53:04,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:53:04,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:53:04,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:53:04,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:53:04,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:53:04,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:53:04,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:53:04,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:53:04,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:53:04,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:53:05,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:53:05,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:53:05,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:53:05,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:53:05,225 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:53:05,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-1.c [2020-12-22 03:53:05,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531aa8bde/d6452fbef10a48d087448b26c6c1c45e/FLAGa5d65642f [2020-12-22 03:53:06,256 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:53:06,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-1.c [2020-12-22 03:53:06,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531aa8bde/d6452fbef10a48d087448b26c6c1c45e/FLAGa5d65642f [2020-12-22 03:53:06,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531aa8bde/d6452fbef10a48d087448b26c6c1c45e [2020-12-22 03:53:06,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:53:06,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:53:06,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:53:06,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:53:06,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:53:06,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:06,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a24e9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06, skipping insertion in model container [2020-12-22 03:53:06,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:06,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:53:06,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:53:06,906 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/ldv-regression/test29-1.c[614,627] [2020-12-22 03:53:06,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:53:06,926 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:53:06,950 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/ldv-regression/test29-1.c[614,627] [2020-12-22 03:53:06,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:53:06,973 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:53:06,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06 WrapperNode [2020-12-22 03:53:06,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:53:06,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:53:06,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:53:06,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:53:06,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:06,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:53:07,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:53:07,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:53:07,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:53:07,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (1/1) ... [2020-12-22 03:53:07,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:53:07,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:53:07,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:53:07,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:53:07,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (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 03:53:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:53:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:53:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:53:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:53:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:53:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:53:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:53:07,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:53:07,565 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:53:07,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:53:07 BoogieIcfgContainer [2020-12-22 03:53:07,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:53:07,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:53:07,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:53:07,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:53:07,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:53:06" (1/3) ... [2020-12-22 03:53:07,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b68021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:53:07, skipping insertion in model container [2020-12-22 03:53:07,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:53:06" (2/3) ... [2020-12-22 03:53:07,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b68021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:53:07, skipping insertion in model container [2020-12-22 03:53:07,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:53:07" (3/3) ... [2020-12-22 03:53:07,601 INFO L111 eAbstractionObserver]: Analyzing ICFG test29-1.c [2020-12-22 03:53:07,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:53:07,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:53:07,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:53:07,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:53:07,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:53:07,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:53:07,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:53:07,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:53:07,715 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:53:07,715 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:53:07,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:53:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-22 03:53:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:53:07,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:53:07,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:53:07,776 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:53:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:53:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2020-12-22 03:53:07,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:53:07,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481954378] [2020-12-22 03:53:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:53:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:53:08,373 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 03:53:08,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481954378] [2020-12-22 03:53:08,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:53:08,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 03:53:08,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613049551] [2020-12-22 03:53:08,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 03:53:08,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:53:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 03:53:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:53:08,410 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2020-12-22 03:53:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:08,575 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2020-12-22 03:53:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 03:53:08,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 03:53:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:08,602 INFO L225 Difference]: With dead ends: 25 [2020-12-22 03:53:08,603 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 03:53:08,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:53:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 03:53:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 03:53:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 03:53:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-12-22 03:53:08,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-12-22 03:53:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:08,654 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-12-22 03:53:08,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 03:53:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-12-22 03:53:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:53:08,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:53:08,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:53:08,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:53:08,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:53:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:53:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2020-12-22 03:53:08,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:53:08,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153373098] [2020-12-22 03:53:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:53:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:53:08,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:53:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:53:08,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:53:08,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:53:08,772 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:53:08,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:53:08,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:53:08 BoogieIcfgContainer [2020-12-22 03:53:08,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:53:08,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:53:08,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:53:08,817 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:53:08,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:53:07" (3/4) ... [2020-12-22 03:53:08,822 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:53:08,882 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test29-1.c-witness.graphml [2020-12-22 03:53:08,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:53:08,886 INFO L168 Benchmark]: Toolchain (without parser) took 2268.78 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 98.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,887 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 127.0 MB in the beginning and 126.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:53:08,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.18 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 119.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.14 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,890 INFO L168 Benchmark]: Boogie Preprocessor took 30.89 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 117.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,891 INFO L168 Benchmark]: RCFGBuilder took 515.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.0 MB in the beginning and 136.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,892 INFO L168 Benchmark]: TraceAbstraction took 1234.16 ms. Allocated memory is still 154.1 MB. Free memory was 135.6 MB in the beginning and 101.0 MB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,893 INFO L168 Benchmark]: Witness Printer took 66.93 ms. Allocated memory is still 154.1 MB. Free memory was 101.0 MB in the beginning and 98.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:08,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 127.0 MB in the beginning and 126.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.18 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 119.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.14 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.89 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 117.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.0 MB in the beginning and 136.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1234.16 ms. Allocated memory is still 154.1 MB. Free memory was 135.6 MB in the beginning and 101.0 MB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Witness Printer took 66.93 ms. Allocated memory is still 154.1 MB. Free memory was 101.0 MB in the beginning and 98.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] union dummy d1, d2; [L16] int n = __VERIFIER_nondet_int(); [L17] EXPR n ? &d1 : &d2 [L17] union dummy *pd = n ? &d1 : &d2; [L18] d1.a = __VERIFIER_nondet_int() [L19] COND FALSE !(pd == &d1) [L22] pd->b = 0 [L24] pd == &d2 && d1.a != 0 [L24] EXPR d1.a [L24] pd == &d2 && d1.a != 0 [L24] COND TRUE pd == &d2 && d1.a != 0 [L30] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 12 SDs, 0 SdLazy, 35 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 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...