/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/pthreadReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 19:50:03,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 19:50:03,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 19:50:03,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 19:50:03,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 19:50:03,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 19:50:03,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 19:50:03,428 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 [2021-05-21 19:50:03,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 19:50:03,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 19:50:03,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 19:50:03,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 19:50:03,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 19:50:03,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 19:50:03,467 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 19:50:03,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 19:50:03,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 19:50:03,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 19:50:03,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 19:50:03,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 19:50:03,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 19:50:03,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 19:50:03,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 19:50:03,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 19:50:03,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 19:50:03,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 19:50:03,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 19:50:03,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 19:50:03,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 19:50:03,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 19:50:03,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 19:50:03,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 19:50:03,781 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 19:50:03,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-05-21 19:50:03,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca005bc/0b56550a12ce4b27a4a5aef7559fd49d/FLAGb600399e2 [2021-05-21 19:50:04,228 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 19:50:04,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-05-21 19:50:04,228 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-21 19:50:04,229 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-21 19:50:04,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca005bc/0b56550a12ce4b27a4a5aef7559fd49d/FLAGb600399e2 [2021-05-21 19:50:04,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca005bc/0b56550a12ce4b27a4a5aef7559fd49d [2021-05-21 19:50:04,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 19:50:04,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 19:50:04,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 19:50:04,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 19:50:04,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 19:50:04,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5db18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04, skipping insertion in model container [2021-05-21 19:50:04,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 19:50:04,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 19:50:04,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 19:50:04,431 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 19:50:04,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 19:50:04,450 INFO L208 MainTranslator]: Completed translation [2021-05-21 19:50:04,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04 WrapperNode [2021-05-21 19:50:04,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 19:50:04,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 19:50:04,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 19:50:04,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 19:50:04,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 19:50:04,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 19:50:04,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 19:50:04,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 19:50:04,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (1/1) ... [2021-05-21 19:50:04,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 19:50:04,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 19:50:04,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 19:50:04,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 19:50:04,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (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 [2021-05-21 19:50:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-21 19:50:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 19:50:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 19:50:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 19:50:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-21 19:50:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-21 19:50:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 19:50:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-05-21 19:50:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-05-21 19:50:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 19:50:04,599 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 19:50:04,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 19:50:04,779 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-21 19:50:04,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:50:04 BoogieIcfgContainer [2021-05-21 19:50:04,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 19:50:04,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 19:50:04,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 19:50:04,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 19:50:04,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 07:50:04" (1/3) ... [2021-05-21 19:50:04,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f0fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 07:50:04, skipping insertion in model container [2021-05-21 19:50:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:50:04" (2/3) ... [2021-05-21 19:50:04,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f0fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 07:50:04, skipping insertion in model container [2021-05-21 19:50:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:50:04" (3/3) ... [2021-05-21 19:50:04,786 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-05-21 19:50:04,791 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 19:50:04,792 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 19:50:04,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 19:50:04,792 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 19:50:04,824 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,825 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,825 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,825 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,826 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,827 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:50:04,833 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-21 19:50:04,861 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-21 19:50:04,877 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 19:50:04,877 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 19:50:04,877 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 19:50:04,877 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 19:50:04,877 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 19:50:04,877 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 19:50:04,877 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 19:50:04,878 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 19:50:04,885 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 72 flow [2021-05-21 19:50:04,894 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 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) [2021-05-21 19:50:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 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) [2021-05-21 19:50:04,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-21 19:50:04,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:50:04,902 INFO L521 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] [2021-05-21 19:50:04,902 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:50:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:50:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash -522341036, now seen corresponding path program 1 times [2021-05-21 19:50:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:50:04,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063701159] [2021-05-21 19:50:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:50:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:50:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:50:05,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:50:05,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063701159] [2021-05-21 19:50:05,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063701159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:50:05,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:50:05,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 19:50:05,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815641105] [2021-05-21 19:50:05,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 19:50:05,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:50:05,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 19:50:05,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 19:50:05,297 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 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 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-05-21 19:50:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:50:05,446 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-21 19:50:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 19:50:05,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-05-21 19:50:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:50:05,454 INFO L225 Difference]: With dead ends: 37 [2021-05-21 19:50:05,454 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 19:50:05,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:50:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 19:50:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 19:50:05,474 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) [2021-05-21 19:50:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 19:50:05,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-05-21 19:50:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:50:05,476 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 19:50:05,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-05-21 19:50:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 19:50:05,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 19:50:05,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 19:50:05,479 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 19:50:05,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 07:50:05 BasicIcfg [2021-05-21 19:50:05,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 19:50:05,484 INFO L168 Benchmark]: Toolchain (without parser) took 1197.39 ms. Allocated memory is still 335.5 MB. Free memory was 298.1 MB in the beginning and 257.3 MB in the end (delta: 40.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,485 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 335.5 MB. Free memory was 316.4 MB in the beginning and 316.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 19:50:05,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.67 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 314.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.83 ms. Allocated memory is still 335.5 MB. Free memory was 314.4 MB in the beginning and 318.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,488 INFO L168 Benchmark]: Boogie Preprocessor took 35.74 ms. Allocated memory is still 335.5 MB. Free memory was 318.1 MB in the beginning and 317.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,489 INFO L168 Benchmark]: RCFGBuilder took 260.71 ms. Allocated memory is still 335.5 MB. Free memory was 317.1 MB in the beginning and 301.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,490 INFO L168 Benchmark]: TraceAbstraction took 700.42 ms. Allocated memory is still 335.5 MB. Free memory was 301.4 MB in the beginning and 257.3 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-05-21 19:50:05,495 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 335.5 MB. Free memory was 316.4 MB in the beginning and 316.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 163.67 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 314.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.83 ms. Allocated memory is still 335.5 MB. Free memory was 314.4 MB in the beginning and 318.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.74 ms. Allocated memory is still 335.5 MB. Free memory was 318.1 MB in the beginning and 317.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 260.71 ms. Allocated memory is still 335.5 MB. Free memory was 317.1 MB in the beginning and 301.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 700.42 ms. Allocated memory is still 335.5 MB. Free memory was 301.4 MB in the beginning and 257.3 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 602.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.9ms, AutomataDifference: 178.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 83 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 163.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 62.5ms SatisfiabilityAnalysisTime, 211.9ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...