/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 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:34:15,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:34:15,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:34:15,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:34:15,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 01:34:15,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 01:34:15,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 01:34:15,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 01:34:15,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 01:34:15,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 01:34:15,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 01:34:15,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 01:34:15,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:34:15,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:34:15,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:34:15,447 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 [2021-04-15 01:34:15,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:34:15,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:34:15,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:34:15,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:34:15,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:34:15,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:34:15,475 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:34:15,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:34:15,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:34:15,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:34:15,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:34:15,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:34:15,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:34:15,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:34:15,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:34:15,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:34:15,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:34:15,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:34:15,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:34:15,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:34:15,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:34:15,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:34:15,764 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:34:15,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-04-15 01:34:15,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab30bbc7/de0f43a24dd0436f8fa03e80f2dd6f5d/FLAGac6d7cdc9 [2021-04-15 01:34:16,308 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:34:16,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-04-15 01:34:16,310 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:16,310 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:16,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab30bbc7/de0f43a24dd0436f8fa03e80f2dd6f5d/FLAGac6d7cdc9 [2021-04-15 01:34:16,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab30bbc7/de0f43a24dd0436f8fa03e80f2dd6f5d [2021-04-15 01:34:16,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:34:16,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:34:16,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:16,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:34:16,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:34:16,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:16,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a4c061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16, skipping insertion in model container [2021-04-15 01:34:16,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:16,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:34:16,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:34:16,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:16,940 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:34:16,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:16,981 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:34:16,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16 WrapperNode [2021-04-15 01:34:16,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:16,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:16,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:34:16,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:34:16,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:16,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:17,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:34:17,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:34:17,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:34:17,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (1/1) ... [2021-04-15 01:34:17,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:34:17,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:34:17,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:34:17,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:34:17,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (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 [2021-04-15 01:34:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-04-15 01:34:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-04-15 01:34:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:34:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:34:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:34:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:34:17,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:34:17,203 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-15 01:34:17,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:17 BoogieIcfgContainer [2021-04-15 01:34:17,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:34:17,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:34:17,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:34:17,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:34:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:34:16" (1/3) ... [2021-04-15 01:34:17,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438c698a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:17, skipping insertion in model container [2021-04-15 01:34:17,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:16" (2/3) ... [2021-04-15 01:34:17,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438c698a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:17, skipping insertion in model container [2021-04-15 01:34:17,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:17" (3/3) ... [2021-04-15 01:34:17,210 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-04-15 01:34:17,214 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:34:17,217 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-15 01:34:17,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-15 01:34:17,253 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:34:17,253 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:34:17,253 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:34:17,253 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:34:17,253 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:34:17,253 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:34:17,254 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:34:17,254 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:34:17,263 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) [2021-04-15 01:34:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-04-15 01:34:17,266 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:17,266 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-04-15 01:34:17,266 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-04-15 01:34:17,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:17,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341324667] [2021-04-15 01:34:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:17,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341324667] [2021-04-15 01:34:17,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:17,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:34:17,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910889013] [2021-04-15 01:34:17,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 01:34:17,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 01:34:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:34:17,434 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) [2021-04-15 01:34:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:17,456 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-04-15 01:34:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 01:34:17,458 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 [2021-04-15 01:34:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:17,466 INFO L225 Difference]: With dead ends: 14 [2021-04-15 01:34:17,466 INFO L226 Difference]: Without dead ends: 6 [2021-04-15 01:34:17,467 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:34:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-04-15 01:34:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-04-15 01:34:17,484 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) [2021-04-15 01:34:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-04-15 01:34:17,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-04-15 01:34:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:17,486 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-04-15 01:34:17,486 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) [2021-04-15 01:34:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-04-15 01:34:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-04-15 01:34:17,487 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:17,487 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-04-15 01:34:17,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:34:17,487 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash 28697735, now seen corresponding path program 1 times [2021-04-15 01:34:17,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:17,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004322784] [2021-04-15 01:34:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:17,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004322784] [2021-04-15 01:34:17,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:17,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:34:17,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773309421] [2021-04-15 01:34:17,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 01:34:17,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 01:34:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:34:17,547 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) [2021-04-15 01:34:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:17,559 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-04-15 01:34:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 01:34:17,560 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 [2021-04-15 01:34:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:17,560 INFO L225 Difference]: With dead ends: 6 [2021-04-15 01:34:17,560 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:34:17,561 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:34:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:34:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:34:17,562 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) [2021-04-15 01:34:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:34:17,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-04-15 01:34:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:17,563 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:34:17,563 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) [2021-04-15 01:34:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:34:17,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:34:17,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:34:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-15 01:34:17,573 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-15 01:34:17,573 INFO L198 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-04-15 01:34:17,573 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 43) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONASSERT(line 47) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L194 CegarLoopUtils]: At program point L49(lines 38 50) the Hoare annotation is: false [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point L47(line 47) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point L43(line 43) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-04-15 01:34:17,574 INFO L198 CegarLoopUtils]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2021-04-15 01:34:17,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:34:17 BoogieIcfgContainer [2021-04-15 01:34:17,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:34:17,583 INFO L168 Benchmark]: Toolchain (without parser) took 773.60 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 233.2 MB in the beginning and 284.7 MB in the end (delta: -51.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:17,584 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:17,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.86 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 233.2 MB in the beginning and 321.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:17,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.86 ms. Allocated memory is still 337.6 MB. Free memory was 321.3 MB in the beginning and 320.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:17,586 INFO L168 Benchmark]: Boogie Preprocessor took 9.90 ms. Allocated memory is still 337.6 MB. Free memory was 320.0 MB in the beginning and 319.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:17,587 INFO L168 Benchmark]: RCFGBuilder took 189.41 ms. Allocated memory is still 337.6 MB. Free memory was 319.0 MB in the beginning and 308.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:17,591 INFO L168 Benchmark]: TraceAbstraction took 376.07 ms. Allocated memory is still 337.6 MB. Free memory was 307.8 MB in the beginning and 284.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:17,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 171.86 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 233.2 MB in the beginning and 321.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.86 ms. Allocated memory is still 337.6 MB. Free memory was 321.3 MB in the beginning and 320.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.90 ms. Allocated memory is still 337.6 MB. Free memory was 320.0 MB in the beginning and 319.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 189.41 ms. Allocated memory is still 337.6 MB. Free memory was 319.0 MB in the beginning and 308.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 376.07 ms. Allocated memory is still 337.6 MB. Free memory was 307.8 MB in the beginning and 284.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 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: 313.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.0ms, AutomataDifference: 58.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8.2ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms 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: 10.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.4ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.9ms SsaConstructionTime, 45.3ms SatisfiabilityAnalysisTime, 91.4ms 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...