/usr/bin/java -ea -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:28:26,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:28:26,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:28:26,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:28:26,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:28:26,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:28:26,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:28:26,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:28:26,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:28:26,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:28:26,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:28:26,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:28:26,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:28:26,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:28:26,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:28:26,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:28:26,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:28:26,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:28:26,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:28:26,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:28:26,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:28:26,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:28:26,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:28:26,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:28:26,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:28:26,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:28:26,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:28:26,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:28:26,329 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 [2020-07-17 22:28:26,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:28:26,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:28:26,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:28:26,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:28:26,356 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:28:26,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:28:26,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:28:26,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:28:26,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:28:26,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:28:26,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:28:26,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:28:26,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:28:26,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:28:26,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:28:26,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:28:26,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:28:26,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:28:26,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:28:26,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:28:26,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:28:26,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:28:26,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:28:26,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:28:26,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:28:26,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:28:26,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:28:26,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:28:26,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:28:26,649 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:28:26,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.i [2020-07-17 22:28:26,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2c3d343/912f8784bf084ce4934589e2456ff6a9/FLAG03f705fd5 [2020-07-17 22:28:27,154 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:28:27,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.i [2020-07-17 22:28:27,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2c3d343/912f8784bf084ce4934589e2456ff6a9/FLAG03f705fd5 [2020-07-17 22:28:27,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2c3d343/912f8784bf084ce4934589e2456ff6a9 [2020-07-17 22:28:27,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:28:27,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:28:27,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:27,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:28:27,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:28:27,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229e7fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27, skipping insertion in model container [2020-07-17 22:28:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:28:27,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:28:27,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:27,814 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:28:27,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:27,849 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:28:27,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27 WrapperNode [2020-07-17 22:28:27,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:27,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:28:27,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:28:27,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:28:27,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (1/1) ... [2020-07-17 22:28:27,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:28:27,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:28:27,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:28:27,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:28:27,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (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 [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-17 22:28:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:28:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:28:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-17 22:28:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-17 22:28:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:28:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:28:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-17 22:28:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:28:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:28:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:28:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:28:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:28:28,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:28:28,358 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:28:28,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:28 BoogieIcfgContainer [2020-07-17 22:28:28,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:28:28,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:28:28,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:28:28,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:28:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:28:27" (1/3) ... [2020-07-17 22:28:28,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce6d597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:28, skipping insertion in model container [2020-07-17 22:28:28,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:27" (2/3) ... [2020-07-17 22:28:28,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce6d597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:28, skipping insertion in model container [2020-07-17 22:28:28,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:28" (3/3) ... [2020-07-17 22:28:28,370 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2020-07-17 22:28:28,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:28:28,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:28:28,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:28:28,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:28:28,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:28:28,422 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:28:28,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:28:28,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:28:28,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:28:28,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:28:28,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:28:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-17 22:28:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:28:28,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:28:28,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:28:28,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:28:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:28:28,449 INFO L82 PathProgramCache]: Analyzing trace with hash 589228543, now seen corresponding path program 1 times [2020-07-17 22:28:28,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:28:28,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629768306] [2020-07-17 22:28:28,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:28:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:28,746 INFO L280 TraceCheckUtils]: 0: Hoare triple {37#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {29#true} is VALID [2020-07-17 22:28:28,747 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-17 22:28:28,748 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #38#return; {29#true} is VALID [2020-07-17 22:28:28,752 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {37#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:28:28,752 INFO L280 TraceCheckUtils]: 1: Hoare triple {37#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {29#true} is VALID [2020-07-17 22:28:28,753 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-17 22:28:28,753 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {29#true} {29#true} #38#return; {29#true} is VALID [2020-07-17 22:28:28,754 INFO L263 TraceCheckUtils]: 4: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID [2020-07-17 22:28:28,756 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} call ~#m~0.base, ~#m~0.offset := #Ultimate.allocOnStack(4);call write~int(0, ~#m~0.base, ~#m~0.offset, 4); {34#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} is VALID [2020-07-17 22:28:28,759 INFO L263 TraceCheckUtils]: 6: Hoare triple {34#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} call mutex_lock(~#m~0.base, ~#m~0.offset); {35#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} is VALID [2020-07-17 22:28:28,761 INFO L280 TraceCheckUtils]: 7: Hoare triple {35#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4); {36#(= 0 |mutex_lock_#t~mem0|)} is VALID [2020-07-17 22:28:28,762 INFO L280 TraceCheckUtils]: 8: Hoare triple {36#(= 0 |mutex_lock_#t~mem0|)} assume 1 == #t~mem0;havoc #t~mem0; {30#false} is VALID [2020-07-17 22:28:28,763 INFO L263 TraceCheckUtils]: 9: Hoare triple {30#false} call err(); {30#false} is VALID [2020-07-17 22:28:28,763 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-17 22:28:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:28:28,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629768306] [2020-07-17 22:28:28,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:28:28,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:28:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358929251] [2020-07-17 22:28:28,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-17 22:28:28,779 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:28:28,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:28:28,809 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:28,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:28:28,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:28:28,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:28:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:28:28,823 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-17 22:28:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:29,190 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-07-17 22:28:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:28:29,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-17 22:28:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:28:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:28:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-17 22:28:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:28:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-17 22:28:29,209 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 45 transitions. [2020-07-17 22:28:29,300 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:29,312 INFO L225 Difference]: With dead ends: 40 [2020-07-17 22:28:29,312 INFO L226 Difference]: Without dead ends: 18 [2020-07-17 22:28:29,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 22:28:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-17 22:28:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-17 22:28:29,371 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:28:29,372 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-17 22:28:29,373 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:28:29,373 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:28:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:29,377 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-07-17 22:28:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-07-17 22:28:29,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:29,378 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:29,379 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:28:29,379 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:28:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:29,383 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-07-17 22:28:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-07-17 22:28:29,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:29,384 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:29,384 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:28:29,384 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:28:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 22:28:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-07-17 22:28:29,389 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2020-07-17 22:28:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:28:29,389 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-07-17 22:28:29,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:28:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-07-17 22:28:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 22:28:29,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:28:29,391 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:28:29,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:28:29,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:28:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:28:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1258570105, now seen corresponding path program 1 times [2020-07-17 22:28:29,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:28:29,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327137142] [2020-07-17 22:28:29,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:28:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:28:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:28:29,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:28:29,481 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:28:29,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:28:29,518 WARN L170 areAnnotationChecker]: mutex_unlockENTRY has no Hoare annotation [2020-07-17 22:28:29,519 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:28:29,524 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-17 22:28:29,524 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-17 22:28:29,525 WARN L170 areAnnotationChecker]: mutex_lockENTRY has no Hoare annotation [2020-07-17 22:28:29,525 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:28:29,533 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:28:29,533 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:28:29,533 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-17 22:28:29,534 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-17 22:28:29,534 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:28:29,534 WARN L170 areAnnotationChecker]: errFINAL has no Hoare annotation [2020-07-17 22:28:29,534 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-17 22:28:29,535 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: L24-3 has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-17 22:28:29,536 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: mutex_unlockFINAL has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: mutex_lockFINAL has no Hoare annotation [2020-07-17 22:28:29,537 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-17 22:28:29,538 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-17 22:28:29,538 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-17 22:28:29,538 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:28:29,538 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:28:29,538 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:28:29,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:28:29 BoogieIcfgContainer [2020-07-17 22:28:29,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:28:29,548 INFO L168 Benchmark]: Toolchain (without parser) took 1943.85 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 186.9 MB in the end (delta: -84.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,551 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.21 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,554 INFO L168 Benchmark]: Boogie Preprocessor took 128.57 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.6 MB in the beginning and 180.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,555 INFO L168 Benchmark]: RCFGBuilder took 383.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 162.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,556 INFO L168 Benchmark]: TraceAbstraction took 1180.86 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 186.9 MB in the end (delta: -25.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:29,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.21 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.57 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.6 MB in the beginning and 180.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 162.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1180.86 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 186.9 MB in the end (delta: -25.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int m; [L31] m = 0 VAL [m={2:0}] [L33] CALL mutex_lock(&m) VAL [a={2:0}] [L18] EXPR \read(*a) VAL [\read(*a)=0, a={2:0}, a={2:0}] [L18] COND FALSE !(*a == 1) [L19] *a = 1 VAL [a={2:0}, a={2:0}] [L33] RET mutex_lock(&m) VAL [m={2:0}] [L37] CALL mutex_lock(&m) VAL [a={2:0}] [L18] EXPR \read(*a) VAL [\read(*a)=1, a={2:0}, a={2:0}] [L18] COND TRUE *a == 1 [L18] CALL err() [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 8 SDslu, 38 SDs, 0 SdLazy, 38 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 330 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...