/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 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:34:19,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:34:19,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:34:19,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:34:19,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 01:34:19,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 01:34:19,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 01:34:19,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 01:34:19,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 01:34:19,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 01:34:19,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 01:34:19,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 01:34:19,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:34:19,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:34:19,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:34:19,432 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 01:34:19,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:34:19,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:34:19,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:34:19,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:34:19,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:34:19,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:34:19,464 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:34:19,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:34:19,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:34:19,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:34:19,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:34:19,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:34:19,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:34:19,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:34:19,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:34:19,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:34:19,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:34:19,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:34:19,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:34:19,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:34:19,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:34:19,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:34:19,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:34:19,702 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:34:19,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-04-15 01:34:19,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b250e78/205ecb12ae544babb5416d8fc6e87959/FLAG48fc8f649 [2021-04-15 01:34:20,112 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:34:20,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-04-15 01:34:20,114 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:20,114 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:20,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b250e78/205ecb12ae544babb5416d8fc6e87959/FLAG48fc8f649 [2021-04-15 01:34:20,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b250e78/205ecb12ae544babb5416d8fc6e87959 [2021-04-15 01:34:20,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:34:20,155 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:34:20,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:20,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:34:20,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:34:20,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129ae6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20, skipping insertion in model container [2021-04-15 01:34:20,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:34:20,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:34:20,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:20,291 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:34:20,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:20,305 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:34:20,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20 WrapperNode [2021-04-15 01:34:20,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:20,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:20,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:34:20,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:34:20,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:20,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:34:20,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:34:20,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:34:20,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (1/1) ... [2021-04-15 01:34:20,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:34:20,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:34:20,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:34:20,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:34:20,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (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 01:34:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-04-15 01:34:20,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:34:20,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:34:20,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:34:20,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-15 01:34:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-04-15 01:34:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:34:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-04-15 01:34:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-04-15 01:34:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:34:20,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:34:20,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:34:20,580 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-15 01:34:20,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:20 BoogieIcfgContainer [2021-04-15 01:34:20,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:34:20,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:34:20,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:34:20,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:34:20,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:34:20" (1/3) ... [2021-04-15 01:34:20,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e2fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:20, skipping insertion in model container [2021-04-15 01:34:20,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:20" (2/3) ... [2021-04-15 01:34:20,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e2fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:20, skipping insertion in model container [2021-04-15 01:34:20,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:20" (3/3) ... [2021-04-15 01:34:20,586 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-04-15 01:34:20,602 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:34:20,602 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:34:20,605 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:34:20,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:34:20,639 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,639 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,639 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,639 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,640 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,641 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:20,646 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-15 01:34:20,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-15 01:34:20,669 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:34:20,669 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:34:20,669 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:34:20,669 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:34:20,669 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:34:20,669 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:34:20,669 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:34:20,670 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:34:20,675 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 29 transitions, 66 flow [2021-04-15 01:34:20,682 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 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 01:34:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 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 01:34:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-15 01:34:20,687 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:20,687 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:34:20,688 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash -477989216, now seen corresponding path program 1 times [2021-04-15 01:34:20,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:20,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742388902] [2021-04-15 01:34:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:20,972 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 01:34:20,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742388902] [2021-04-15 01:34:20,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:20,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 01:34:20,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246265584] [2021-04-15 01:34:20,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:34:20,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:34:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:34:20,992 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 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 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 01:34:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:21,131 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-04-15 01:34:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 01:34:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-04-15 01:34:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:21,136 INFO L225 Difference]: With dead ends: 32 [2021-04-15 01:34:21,136 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:34:21,138 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 181.0ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-04-15 01:34:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:34:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:34:21,151 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 01:34:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:34:21,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-04-15 01:34:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:21,152 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:34:21,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 01:34:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:34:21,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:34:21,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:34:21,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:34:21 BasicIcfg [2021-04-15 01:34:21,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:34:21,158 INFO L168 Benchmark]: Toolchain (without parser) took 1002.26 ms. Allocated memory was 255.9 MB in the beginning and 333.4 MB in the end (delta: 77.6 MB). Free memory was 234.9 MB in the beginning and 257.2 MB in the end (delta: -22.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:21,159 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:21,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.44 ms. Allocated memory was 255.9 MB in the beginning and 333.4 MB in the end (delta: 77.6 MB). Free memory was 234.5 MB in the beginning and 316.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:21,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.48 ms. Allocated memory is still 333.4 MB. Free memory was 316.8 MB in the beginning and 315.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:21,161 INFO L168 Benchmark]: Boogie Preprocessor took 10.57 ms. Allocated memory is still 333.4 MB. Free memory was 315.3 MB in the beginning and 314.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:21,162 INFO L168 Benchmark]: RCFGBuilder took 244.18 ms. Allocated memory is still 333.4 MB. Free memory was 314.2 MB in the beginning and 301.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:21,162 INFO L168 Benchmark]: TraceAbstraction took 574.05 ms. Allocated memory is still 333.4 MB. Free memory was 300.7 MB in the beginning and 257.2 MB in the end (delta: 43.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:21,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 149.44 ms. Allocated memory was 255.9 MB in the beginning and 333.4 MB in the end (delta: 77.6 MB). Free memory was 234.5 MB in the beginning and 316.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.48 ms. Allocated memory is still 333.4 MB. Free memory was 316.8 MB in the beginning and 315.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.57 ms. Allocated memory is still 333.4 MB. Free memory was 315.3 MB in the beginning and 314.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 244.18 ms. Allocated memory is still 333.4 MB. Free memory was 314.2 MB in the beginning and 301.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 574.05 ms. Allocated memory is still 333.4 MB. Free memory was 300.7 MB in the beginning and 257.2 MB in the end (delta: 43.5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 486.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.0ms, AutomataDifference: 157.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 26 SDslu, 67 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 181.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 5.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.7ms SsaConstructionTime, 37.8ms SatisfiabilityAnalysisTime, 191.4ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...