/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:30:00,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:30:00,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:30:00,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 20:30:00,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 20:30:00,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 20:30:00,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 20:30:00,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 20:30:00,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 20:30:00,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 20:30:00,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 20:30:00,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 20:30:00,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 20:30:00,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 20:30:00,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 20:30:00,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 20:30:00,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 20:30:00,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 20:30:00,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 20:30:00,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 20:30:00,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 20:30:00,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 20:30:00,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 20:30:00,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 20:30:00,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 20:30:00,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 20:30:00,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 20:30:00,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 20:30:00,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 20:30:00,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 20:30:00,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 20:30:00,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 20:30:00,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 20:30:00,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 20:30:00,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:30:00,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:30:00,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:30:00,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:30:00,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:30:00,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:30:00,463 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:30:00,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:30:00,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:30:00,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:30:00,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:30:00,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:30:00,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:30:00,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:30:00,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:30:00,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:30:00,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:30:00,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:30:00,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:30:00,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:30:00,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:30:00,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:30:00,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:30:00,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:30:00,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 20:30:00,843 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 20:30:00,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-10 20:30:00,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df7a9972/f0254082b1c54b48a48f0102736729b3/FLAGca53ad20e [2021-03-10 20:30:01,385 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 20:30:01,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-10 20:30:01,386 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:30:01,386 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:30:01,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df7a9972/f0254082b1c54b48a48f0102736729b3/FLAGca53ad20e [2021-03-10 20:30:01,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df7a9972/f0254082b1c54b48a48f0102736729b3 [2021-03-10 20:30:01,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:30:01,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 20:30:01,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 20:30:01,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 20:30:01,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 20:30:01,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:30:01" (1/1) ... [2021-03-10 20:30:01,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409efc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:01, skipping insertion in model container [2021-03-10 20:30:01,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:30:01" (1/1) ... [2021-03-10 20:30:01,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 20:30:01,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 20:30:02,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:30:02,067 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 20:30:02,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:30:02,093 INFO L208 MainTranslator]: Completed translation [2021-03-10 20:30:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02 WrapperNode [2021-03-10 20:30:02,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 20:30:02,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:30:02,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:30:02,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:30:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:30:02,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:30:02,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:30:02,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:30:02,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (1/1) ... [2021-03-10 20:30:02,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:30:02,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:30:02,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:30:02,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:30:02,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (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 [2021-03-10 20:30:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-10 20:30:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-10 20:30:02,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:30:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:30:02,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 20:30:02,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 20:30:02,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:30:02,396 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-10 20:30:02,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:30:02 BoogieIcfgContainer [2021-03-10 20:30:02,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:30:02,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:30:02,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:30:02,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:30:02,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 08:30:01" (1/3) ... [2021-03-10 20:30:02,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24823d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:30:02, skipping insertion in model container [2021-03-10 20:30:02,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:30:02" (2/3) ... [2021-03-10 20:30:02,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24823d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:30:02, skipping insertion in model container [2021-03-10 20:30:02,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:30:02" (3/3) ... [2021-03-10 20:30:02,403 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-03-10 20:30:02,408 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:30:02,411 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-10 20:30:02,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-10 20:30:02,443 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:30:02,443 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:30:02,443 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:30:02,444 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:30:02,444 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:30:02,444 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:30:02,444 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:30:02,444 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:30:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-03-10 20:30:02,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:30:02,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-03-10 20:30:02,459 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:30:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:30:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-03-10 20:30:02,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:30:02,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975373133] [2021-03-10 20:30:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:30:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:30:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:30:02,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975373133] [2021-03-10 20:30:02,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:30:02,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 20:30:02,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689114411] [2021-03-10 20:30:02,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:30:02,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:30:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:30:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:30:02,663 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:30:02,675 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-03-10 20:30:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:30:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-03-10 20:30:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:30:02,682 INFO L225 Difference]: With dead ends: 14 [2021-03-10 20:30:02,682 INFO L226 Difference]: Without dead ends: 6 [2021-03-10 20:30:02,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:30:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-03-10 20:30:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-03-10 20:30:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-03-10 20:30:02,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-03-10 20:30:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:30:02,706 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-03-10 20:30:02,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-03-10 20:30:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-10 20:30:02,707 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:30:02,707 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-10 20:30:02,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:30:02,707 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:30:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:30:02,708 INFO L82 PathProgramCache]: Analyzing trace with hash 28697735, now seen corresponding path program 1 times [2021-03-10 20:30:02,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:30:02,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816340368] [2021-03-10 20:30:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:30:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:30:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:30:02,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816340368] [2021-03-10 20:30:02,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:30:02,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 20:30:02,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325002018] [2021-03-10 20:30:02,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:30:02,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:30:02,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:30:02,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:30:02,762 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:30:02,774 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-03-10 20:30:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:30:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-03-10 20:30:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:30:02,775 INFO L225 Difference]: With dead ends: 6 [2021-03-10 20:30:02,775 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 20:30:02,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:30:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 20:30:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 20:30:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 20:30:02,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-03-10 20:30:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:30:02,777 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 20:30:02,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:30:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 20:30:02,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 20:30:02,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:30:02,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-03-10 20:30:02,788 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-03-10 20:30:02,788 INFO L198 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-03-10 20:30:02,788 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-03-10 20:30:02,788 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 43) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONASSERT(line 47) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L194 CegarLoopUtils]: At program point L49(lines 38 50) the Hoare annotation is: false [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point L47(line 47) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point L43(line 43) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-03-10 20:30:02,789 INFO L198 CegarLoopUtils]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2021-03-10 20:30:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:30:02 BoogieIcfgContainer [2021-03-10 20:30:02,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:30:02,802 INFO L168 Benchmark]: Toolchain (without parser) took 919.86 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 291.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-10 20:30:02,803 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 348.1 MB. Free memory was 329.5 MB in the beginning and 329.4 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:30:02,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.99 ms. Allocated memory is still 348.1 MB. Free memory was 309.9 MB in the beginning and 330.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:30:02,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 348.1 MB. Free memory was 330.5 MB in the beginning and 329.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:30:02,805 INFO L168 Benchmark]: Boogie Preprocessor took 20.55 ms. Allocated memory is still 348.1 MB. Free memory was 329.4 MB in the beginning and 328.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:30:02,807 INFO L168 Benchmark]: RCFGBuilder took 251.92 ms. Allocated memory is still 348.1 MB. Free memory was 328.4 MB in the beginning and 314.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-10 20:30:02,808 INFO L168 Benchmark]: TraceAbstraction took 401.76 ms. Allocated memory is still 348.1 MB. Free memory was 313.7 MB in the beginning and 291.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 20:30:02,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 348.1 MB. Free memory was 329.5 MB in the beginning and 329.4 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 207.99 ms. Allocated memory is still 348.1 MB. Free memory was 309.9 MB in the beginning and 330.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 348.1 MB. Free memory was 330.5 MB in the beginning and 329.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.55 ms. Allocated memory is still 348.1 MB. Free memory was 329.4 MB in the beginning and 328.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 251.92 ms. Allocated memory is still 348.1 MB. Free memory was 328.4 MB in the beginning and 314.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 401.76 ms. Allocated memory is still 348.1 MB. Free memory was 313.7 MB in the beginning and 291.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 336.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.8ms, AutomataDifference: 46.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9.3ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.0ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 35.2ms SatisfiabilityAnalysisTime, 117.9ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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...