/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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 0.1.25-c90d42b [2020-09-24 14:58:18,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:58:18,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:58:18,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:58:18,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:58:18,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:58:18,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:58:18,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:58:18,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:58:18,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:58:18,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:58:18,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:58:18,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:58:18,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:58:18,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:58:18,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:58:18,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:58:18,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:58:18,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:58:18,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:58:18,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:58:18,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:58:18,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:58:18,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:58:18,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:58:18,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:58:18,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:58:18,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:58:18,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:58:18,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:58:18,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:58:18,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:58:18,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:58:18,667 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:58:18,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:58:18,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:58:18,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:58:18,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:58:18,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:58:18,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:58:18,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:58:18,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:58:18,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:58:18,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:58:18,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:58:18,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:58:18,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:58:18,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:58:18,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:58:18,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:58:18,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:58:18,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:58:18,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:58:18,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:58:18,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:58:18,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:58:18,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:58:18,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:58:18,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:58:19,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:58:19,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:58:19,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:58:19,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:58:19,160 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:58:19,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-09-24 14:58:19,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e98d8e4/abc36b0ad84247819b334a8742f60fd6/FLAG9e48e1983 [2020-09-24 14:58:19,802 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:58:19,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2020-09-24 14:58:19,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e98d8e4/abc36b0ad84247819b334a8742f60fd6/FLAG9e48e1983 [2020-09-24 14:58:20,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e98d8e4/abc36b0ad84247819b334a8742f60fd6 [2020-09-24 14:58:20,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:58:20,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:58:20,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:20,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:58:20,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:58:20,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d7fa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20, skipping insertion in model container [2020-09-24 14:58:20,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:58:20,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:58:20,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:20,445 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:58:20,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:20,483 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:58:20,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20 WrapperNode [2020-09-24 14:58:20,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:20,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:58:20,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:58:20,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:58:20,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (1/1) ... [2020-09-24 14:58:20,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:58:20,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:58:20,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:58:20,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:58:20,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (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 [2020-09-24 14:58:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:58:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:58:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-09-24 14:58:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-24 14:58:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-24 14:58:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:58:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:58:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-09-24 14:58:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:58:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:58:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:58:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:58:20,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:58:20,932 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:58:20,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:20 BoogieIcfgContainer [2020-09-24 14:58:20,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:58:20,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:58:20,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:58:20,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:58:20,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:58:20" (1/3) ... [2020-09-24 14:58:20,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcbea14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:20, skipping insertion in model container [2020-09-24 14:58:20,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:20" (2/3) ... [2020-09-24 14:58:20,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcbea14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:20, skipping insertion in model container [2020-09-24 14:58:20,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:20" (3/3) ... [2020-09-24 14:58:20,947 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2020-09-24 14:58:20,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:58:20,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:58:20,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:58:21,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:58:21,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:58:21,029 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:58:21,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:58:21,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:58:21,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:58:21,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:58:21,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:58:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-09-24 14:58:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 14:58:21,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:21,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:21,066 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-09-24 14:58:21,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:21,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193918947] [2020-09-24 14:58:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:21,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193918947] [2020-09-24 14:58:21,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:21,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:58:21,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625288893] [2020-09-24 14:58:21,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:58:21,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:21,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:58:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:58:21,469 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 7 states. [2020-09-24 14:58:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:21,732 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-09-24 14:58:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:58:21,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-24 14:58:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:21,746 INFO L225 Difference]: With dead ends: 60 [2020-09-24 14:58:21,747 INFO L226 Difference]: Without dead ends: 25 [2020-09-24 14:58:21,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:58:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-24 14:58:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-24 14:58:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 14:58:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-09-24 14:58:21,809 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-09-24 14:58:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:21,809 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-09-24 14:58:21,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:58:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-09-24 14:58:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 14:58:21,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:21,811 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] [2020-09-24 14:58:21,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:58:21,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1044574925, now seen corresponding path program 1 times [2020-09-24 14:58:21,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:21,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814390259] [2020-09-24 14:58:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:58:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:22,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814390259] [2020-09-24 14:58:22,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:22,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:58:22,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750759437] [2020-09-24 14:58:22,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:58:22,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:58:22,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:58:22,029 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 10 states. [2020-09-24 14:58:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:22,304 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-09-24 14:58:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 14:58:22,304 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-24 14:58:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:22,305 INFO L225 Difference]: With dead ends: 25 [2020-09-24 14:58:22,305 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:22,307 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 [2020-09-24 14:58:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:22,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-09-24 14:58:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:22,309 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:22,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:58:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:22,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:22,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:58:22,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:22,419 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 14:58:22,419 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 14:58:22,419 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 14:58:22,420 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)) [2020-09-24 14:58:22,420 INFO L268 CegarLoopResult]: For program point L27-5(line 27) no Hoare annotation was computed. [2020-09-24 14:58:22,420 INFO L268 CegarLoopResult]: For program point L27-6(line 27) no Hoare annotation was computed. [2020-09-24 14:58:22,420 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))) [2020-09-24 14:58:22,421 INFO L268 CegarLoopResult]: For program point mutex_unlockEXIT(lines 25 29) no Hoare annotation was computed. [2020-09-24 14:58:22,421 INFO L268 CegarLoopResult]: For program point mutex_unlockFINAL(lines 25 29) no Hoare annotation was computed. [2020-09-24 14:58:22,421 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,421 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,422 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|)) [2020-09-24 14:58:22,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,422 INFO L268 CegarLoopResult]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-24 14:58:22,422 INFO L268 CegarLoopResult]: For program point errEXIT(lines 12 13) no Hoare annotation was computed. [2020-09-24 14:58:22,422 INFO L271 CegarLoopResult]: At program point errENTRY(lines 12 13) the Hoare annotation is: true [2020-09-24 14:58:22,423 INFO L268 CegarLoopResult]: For program point errFINAL(lines 12 13) no Hoare annotation was computed. [2020-09-24 14:58:22,423 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)|)) [2020-09-24 14:58:22,423 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 14:58:22,423 INFO L268 CegarLoopResult]: For program point mutex_lockEXIT(lines 19 23) no Hoare annotation was computed. [2020-09-24 14:58:22,424 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 14:58:22,424 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 14:58:22,424 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)) [2020-09-24 14:58:22,424 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-24 14:58:22,424 INFO L268 CegarLoopResult]: For program point L21-6(line 21) no Hoare annotation was computed. [2020-09-24 14:58:22,425 INFO L268 CegarLoopResult]: For program point mutex_lockFINAL(lines 19 23) no Hoare annotation was computed. [2020-09-24 14:58:22,425 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,425 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:22,425 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:22,425 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:22,425 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 14:58:22,426 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 14:58:22,426 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 31 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 14:58:22,426 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 31 43) no Hoare annotation was computed. [2020-09-24 14:58:22,426 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 31 43) no Hoare annotation was computed. [2020-09-24 14:58:22,426 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 14:58:22,426 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) [2020-09-24 14:58:22,427 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) [2020-09-24 14:58:22,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:22 BoogieIcfgContainer [2020-09-24 14:58:22,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:22,439 INFO L168 Benchmark]: Toolchain (without parser) took 2279.94 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 103.6 MB in the beginning and 173.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:22,440 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:58:22,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.47 ms. Allocated memory is still 141.6 MB. Free memory was 103.0 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:22,442 INFO L168 Benchmark]: Boogie Preprocessor took 114.72 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 183.5 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:22,443 INFO L168 Benchmark]: RCFGBuilder took 338.18 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 169.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:22,444 INFO L168 Benchmark]: TraceAbstraction took 1495.88 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 168.5 MB in the beginning and 173.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:22,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.47 ms. Allocated memory is still 141.6 MB. Free memory was 103.0 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.72 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 183.5 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.18 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 169.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1495.88 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 168.5 MB in the beginning and 173.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, 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, 11 LocationsWithAnnotation, 15 PreInvPairs, 16 NumberOfFragments, 74 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 2730 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...