/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:39:35,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:39:35,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:39:35,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:39:35,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:39:35,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:39:35,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:39:35,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:39:35,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:39:35,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:39:35,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:39:35,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:39:35,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:39:35,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:39:35,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:39:35,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:39:35,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:39:35,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:39:35,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:39:35,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:39:35,823 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:39:35,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:39:35,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:39:35,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:39:35,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:39:35,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:39:35,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:39:35,824 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:39:36,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:39:36,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:39:36,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:39:36,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:39:36,358 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:39:36,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-09-04 16:39:36,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee06aedcf/17710d64aca342b8a33530c8137e449f/FLAGbe6fa74d5 [2020-09-04 16:39:37,140 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:39:37,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-09-04 16:39:37,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee06aedcf/17710d64aca342b8a33530c8137e449f/FLAGbe6fa74d5 [2020-09-04 16:39:37,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee06aedcf/17710d64aca342b8a33530c8137e449f [2020-09-04 16:39:37,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:39:37,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:39:37,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:37,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:39:37,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:39:37,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45241865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37, skipping insertion in model container [2020-09-04 16:39:37,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:39:37,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:39:37,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:37,768 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:39:37,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:37,812 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:39:37,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37 WrapperNode [2020-09-04 16:39:37,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:37,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:39:37,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:39:37,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:39:37,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... [2020-09-04 16:39:37,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:39:37,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:39:37,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:39:37,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:39:37,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-04 16:39:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:39:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:39:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-09-04 16:39:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-04 16:39:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:39:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:39:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:39:38,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:39:38,305 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:39:38,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:38 BoogieIcfgContainer [2020-09-04 16:39:38,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:39:38,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:39:38,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:39:38,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:39:38,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:39:37" (1/3) ... [2020-09-04 16:39:38,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:38, skipping insertion in model container [2020-09-04 16:39:38,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:37" (2/3) ... [2020-09-04 16:39:38,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:38, skipping insertion in model container [2020-09-04 16:39:38,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:38" (3/3) ... [2020-09-04 16:39:38,321 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2020-09-04 16:39:38,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:39:38,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:39:38,380 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:39:38,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:39:38,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:39:38,429 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:39:38,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:39:38,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:39:38,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:39:38,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:39:38,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:39:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-09-04 16:39:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:39:38,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:38,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:38,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:38,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:38,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-09-04 16:39:38,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:38,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103623251] [2020-09-04 16:39:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:38,569 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:38,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103623251] [2020-09-04 16:39:38,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:38,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:39:38,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978438350] [2020-09-04 16:39:38,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:39:38,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:38,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:39:38,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:39:38,857 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 7 states. [2020-09-04 16:39:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:39,131 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-09-04 16:39:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:39:39,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-04 16:39:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:39,145 INFO L225 Difference]: With dead ends: 60 [2020-09-04 16:39:39,145 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 16:39:39,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:39:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 16:39:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-04 16:39:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 16:39:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-09-04 16:39:39,214 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-09-04 16:39:39,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:39,215 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-09-04 16:39:39,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:39:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-09-04 16:39:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 16:39:39,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:39,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:39,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:39:39,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:39,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1044574925, now seen corresponding path program 1 times [2020-09-04 16:39:39,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:39,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277440079] [2020-09-04 16:39:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:39,223 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:39,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 16:39:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:39,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277440079] [2020-09-04 16:39:39,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:39,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 16:39:39,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931084155] [2020-09-04 16:39:39,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 16:39:39,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:39,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 16:39:39,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:39:39,419 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 10 states. [2020-09-04 16:39:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:39,734 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-09-04 16:39:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:39:39,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-04 16:39:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:39,735 INFO L225 Difference]: With dead ends: 25 [2020-09-04 16:39:39,735 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:39:39,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:39:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:39:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:39:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:39:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:39:39,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-09-04 16:39:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:39,740 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:39:39,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 16:39:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:39:39,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:39:39,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:39:39,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:39:40,213 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) (and (= |#memory_int| |old(#memory_int)|) (= (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset) 1))) [2020-09-04 16:39:40,214 INFO L264 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= |mutex_unlock_#t~mem1| 1) (= (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset) 1)) (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1))) [2020-09-04 16:39:40,214 INFO L264 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2020-09-04 16:39:40,214 INFO L264 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2020-09-04 16:39:40,215 INFO L271 CegarLoopResult]: At program point L27-5(line 27) the Hoare annotation is: true [2020-09-04 16:39:40,215 INFO L271 CegarLoopResult]: At program point L27-6(line 27) the Hoare annotation is: true [2020-09-04 16:39:40,215 INFO L264 CegarLoopResult]: At program point mutex_unlockENTRY(lines 25 29) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1))) [2020-09-04 16:39:40,217 INFO L271 CegarLoopResult]: At program point mutex_unlockEXIT(lines 25 29) the Hoare annotation is: true [2020-09-04 16:39:40,218 INFO L271 CegarLoopResult]: At program point mutex_unlockFINAL(lines 25 29) the Hoare annotation is: true [2020-09-04 16:39:40,218 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,218 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,218 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,218 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 16:39:40,219 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,219 INFO L271 CegarLoopResult]: At program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: true [2020-09-04 16:39:40,219 INFO L271 CegarLoopResult]: At program point errEXIT(lines 12 13) the Hoare annotation is: true [2020-09-04 16:39:40,219 INFO L271 CegarLoopResult]: At program point errENTRY(lines 12 13) the Hoare annotation is: true [2020-09-04 16:39:40,220 INFO L271 CegarLoopResult]: At program point errFINAL(lines 12 13) the Hoare annotation is: true [2020-09-04 16:39:40,222 INFO L264 CegarLoopResult]: At program point mutex_lockENTRY(lines 19 23) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (= |#memory_int| |old(#memory_int)|)) [2020-09-04 16:39:40,223 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-09-04 16:39:40,223 INFO L264 CegarLoopResult]: At program point mutex_lockEXIT(lines 19 23) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1))) [2020-09-04 16:39:40,223 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#t~mem0| 0) (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-09-04 16:39:40,223 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2020-09-04 16:39:40,223 INFO L264 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2020-09-04 16:39:40,225 INFO L264 CegarLoopResult]: At program point L21-5(line 21) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#t~mem0| 0) (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-09-04 16:39:40,225 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-09-04 16:39:40,225 INFO L264 CegarLoopResult]: At program point mutex_lockFINAL(lines 19 23) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1))) [2020-09-04 16:39:40,225 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,226 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,226 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,226 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:39:40,226 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-04 16:39:40,226 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-09-04 16:39:40,227 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 31 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-04 16:39:40,227 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 31 43) the Hoare annotation is: true [2020-09-04 16:39:40,227 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 31 43) the Hoare annotation is: true [2020-09-04 16:39:40,228 INFO L271 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: true [2020-09-04 16:39:40,228 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 1) [2020-09-04 16:39:40,228 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 0) [2020-09-04 16:39:40,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 16:39:40,254 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 16:39:40,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:39:40 BoogieIcfgContainer [2020-09-04 16:39:40,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:39:40,275 INFO L168 Benchmark]: Toolchain (without parser) took 2776.65 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 102.9 MB in the beginning and 135.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:40,277 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 145.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:39:40,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.94 ms. Allocated memory is still 145.8 MB. Free memory was 102.7 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:40,283 INFO L168 Benchmark]: Boogie Preprocessor took 133.06 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.9 MB in the beginning and 181.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:40,285 INFO L168 Benchmark]: RCFGBuilder took 364.15 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 167.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:40,288 INFO L168 Benchmark]: TraceAbstraction took 1956.57 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.5 MB in the beginning and 135.4 MB in the end (delta: 31.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:40,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 145.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.94 ms. Allocated memory is still 145.8 MB. Free memory was 102.7 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.06 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.9 MB in the beginning and 181.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.15 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 167.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1956.57 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.5 MB in the beginning and 135.4 MB in the end (delta: 31.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 25]: Procedure Contract for mutex_unlock Derived contract for procedure mutex_unlock: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for err Derived contract for procedure err: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for mutex_lock [2020-09-04 16:39:40,328 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 16:39:40,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 16:39:40,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 16:39:40,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure mutex_lock: !(\old(unknown-#memory_int-unknown)[a][a] == 0) || ((a == a && a == a) && unknown-#memory_int-unknown[a][a] == 1) - ProcedureContractResult [Line: 31]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 43 SDslu, 89 SDs, 0 SdLazy, 179 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 56 PreInvPairs, 69 NumberOfFragments, 281 HoareAnnotationTreeSize, 56 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 39 FomulaSimplificationsInter, 265 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 correct! Received shutdown request...