/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:25:34,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:25:34,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:25:34,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:25:34,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:25:34,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:25:34,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:25:34,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:25:34,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:25:34,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:25:34,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:25:34,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:25:35,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:25:35,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:25:35,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:25:35,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:25:35,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:25:35,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:25:35,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:25:35,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:25:35,081 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:25:35,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:25:35,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:25:35,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:25:35,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:25:35,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:25:35,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:25:35,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:25:35,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:25:35,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:25:35,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:25:35,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:25:35,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:25:35,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:25:35,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:25:35,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:25:35,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:25:35,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:25:35,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:25:35,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:25:35,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:25:35,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:25:35,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:25:35,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:25:35,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:25:35,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:25:35,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:25:35,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:25:35,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:25:35,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:25:35,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:25:35,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-10-23 18:25:35,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1378dd1b/4f4a932803794ff1acf94f812e8186bb/FLAG729159743 [2020-10-23 18:25:36,169 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:25:36,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-10-23 18:25:36,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1378dd1b/4f4a932803794ff1acf94f812e8186bb/FLAG729159743 [2020-10-23 18:25:36,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1378dd1b/4f4a932803794ff1acf94f812e8186bb [2020-10-23 18:25:36,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:25:36,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:25:36,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:36,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:25:36,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:25:36,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5a800f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36, skipping insertion in model container [2020-10-23 18:25:36,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:25:36,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:25:36,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:36,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:25:36,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:36,803 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:25:36,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36 WrapperNode [2020-10-23 18:25:36,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:36,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:25:36,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:25:36,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:25:36,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (1/1) ... [2020-10-23 18:25:36,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:25:36,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:25:36,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:25:36,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:25:36,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (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 [2020-10-23 18:25:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:25:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:25:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:25:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-10-23 18:25:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-10-23 18:25:36,935 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-23 18:25:36,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:25:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:25:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:25:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:25:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:25:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-10-23 18:25:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-10-23 18:25:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:25:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:25:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:25:37,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:25:37,250 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:25:37,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:37 BoogieIcfgContainer [2020-10-23 18:25:37,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:25:37,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:25:37,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:25:37,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:25:37,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:25:36" (1/3) ... [2020-10-23 18:25:37,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f00fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:37, skipping insertion in model container [2020-10-23 18:25:37,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:36" (2/3) ... [2020-10-23 18:25:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f00fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:37, skipping insertion in model container [2020-10-23 18:25:37,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:37" (3/3) ... [2020-10-23 18:25:37,286 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2020-10-23 18:25:37,302 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:25:37,307 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:25:37,325 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:25:37,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:25:37,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:25:37,377 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:25:37,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:25:37,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:25:37,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:25:37,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:25:37,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:25:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-23 18:25:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:25:37,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:37,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:37,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1210577418, now seen corresponding path program 1 times [2020-10-23 18:25:37,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:37,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485275924] [2020-10-23 18:25:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:37,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485275924] [2020-10-23 18:25:37,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:37,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:25:37,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884194338] [2020-10-23 18:25:37,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:25:37,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:38,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:25:38,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:25:38,011 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2020-10-23 18:25:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:38,360 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-23 18:25:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:25:38,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-23 18:25:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:38,373 INFO L225 Difference]: With dead ends: 51 [2020-10-23 18:25:38,373 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:25:38,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:25:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:25:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-23 18:25:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-23 18:25:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-23 18:25:38,455 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 12 [2020-10-23 18:25:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:38,456 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-23 18:25:38,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:25:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-23 18:25:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:25:38,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:38,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:38,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:25:38,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash 99359692, now seen corresponding path program 1 times [2020-10-23 18:25:38,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:38,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438585906] [2020-10-23 18:25:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:25:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:38,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438585906] [2020-10-23 18:25:38,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:38,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 18:25:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311363515] [2020-10-23 18:25:38,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:25:38,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:25:38,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:25:38,706 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 9 states. [2020-10-23 18:25:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:39,272 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-23 18:25:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:25:39,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-23 18:25:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:39,274 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:25:39,274 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:25:39,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:25:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:25:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:25:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:25:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:25:39,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-23 18:25:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:39,279 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:25:39,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:25:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:25:39,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:25:39,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:25:39,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:25:39,625 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:25:39,625 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:25:39,626 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:25:39,627 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:25:39,627 INFO L270 CegarLoopResult]: At program point mutex_unlockENTRY(lines 27 31) 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))) [2020-10-23 18:25:39,627 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-23 18:25:39,627 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2020-10-23 18:25:39,628 INFO L274 CegarLoopResult]: For program point mutex_unlockEXIT(lines 27 31) no Hoare annotation was computed. [2020-10-23 18:25:39,628 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-10-23 18:25:39,628 INFO L274 CegarLoopResult]: For program point mutex_unlockFINAL(lines 27 31) no Hoare annotation was computed. [2020-10-23 18:25:39,632 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:25:39,632 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:25:39,632 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:25:39,632 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:25:39,633 INFO L274 CegarLoopResult]: For program point errEXIT(lines 14 15) no Hoare annotation was computed. [2020-10-23 18:25:39,633 INFO L277 CegarLoopResult]: At program point errENTRY(lines 14 15) the Hoare annotation is: true [2020-10-23 18:25:39,633 INFO L274 CegarLoopResult]: For program point errFINAL(lines 14 15) no Hoare annotation was computed. [2020-10-23 18:25:39,638 INFO L270 CegarLoopResult]: At program point mutex_lockENTRY(lines 21 25) 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)|)) [2020-10-23 18:25:39,639 INFO L274 CegarLoopResult]: For program point mutex_lockFINAL(lines 21 25) no Hoare annotation was computed. [2020-10-23 18:25:39,639 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-23 18:25:39,639 INFO L270 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2020-10-23 18:25:39,639 INFO L274 CegarLoopResult]: For program point mutex_lockEXIT(lines 21 25) no Hoare annotation was computed. [2020-10-23 18:25:39,639 INFO L274 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-10-23 18:25:39,639 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:25:39,640 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:25:39,640 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:25:39,640 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:25:39,640 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 33 45) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:25:39,640 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 33 45) no Hoare annotation was computed. [2020-10-23 18:25:39,640 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 33 45) no Hoare annotation was computed. [2020-10-23 18:25:39,640 INFO L274 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-10-23 18:25:39,641 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 0) [2020-10-23 18:25:39,641 INFO L270 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 1) [2020-10-23 18:25:39,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:25:39 BoogieIcfgContainer [2020-10-23 18:25:39,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:25:39,662 INFO L168 Benchmark]: Toolchain (without parser) took 3107.29 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 99.6 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:39,663 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:25:39,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.51 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:39,668 INFO L168 Benchmark]: Boogie Preprocessor took 38.23 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:25:39,670 INFO L168 Benchmark]: RCFGBuilder took 407.59 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 104.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:39,671 INFO L168 Benchmark]: TraceAbstraction took 2396.85 ms. Allocated memory is still 154.1 MB. Free memory was 104.4 MB in the beginning and 99.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:39,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.51 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.23 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 407.59 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 104.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2396.85 ms. Allocated memory is still 154.1 MB. Free memory was 104.4 MB in the beginning and 99.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 19 SDslu, 60 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 12 LocationsWithAnnotation, 17 PreInvPairs, 18 NumberOfFragments, 99 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 103 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...