/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/concurrent/pthreads/forkJoinInLoop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c1f4b5c [2019-12-17 10:59:12,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-17 10:59:12,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-17 10:59:12,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-17 10:59:12,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-17 10:59:12,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-17 10:59:12,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-17 10:59:12,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-17 10:59:12,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-17 10:59:12,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-17 10:59:12,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-17 10:59:12,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-17 10:59:12,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-17 10:59:12,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-17 10:59:12,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-17 10:59:12,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-17 10:59:12,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-17 10:59:12,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-17 10:59:12,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-17 10:59:12,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-17 10:59:12,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-17 10:59:12,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-17 10:59:12,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-17 10:59:12,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-17 10:59:12,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-17 10:59:12,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-17 10:59:12,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-17 10:59:12,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-17 10:59:12,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-17 10:59:12,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-17 10:59:12,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-17 10:59:12,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-17 10:59:12,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-17 10:59:12,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-17 10:59:12,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-17 10:59:12,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-17 10:59:12,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-17 10:59:12,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-17 10:59:12,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-17 10:59:12,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-17 10:59:12,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-17 10:59:12,277 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 [2019-12-17 10:59:12,290 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-17 10:59:12,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-17 10:59:12,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-17 10:59:12,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-17 10:59:12,292 INFO L138 SettingsManager]: * Use SBE=true [2019-12-17 10:59:12,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-17 10:59:12,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-17 10:59:12,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-17 10:59:12,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-17 10:59:12,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-17 10:59:12,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-17 10:59:12,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-17 10:59:12,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-17 10:59:12,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-17 10:59:12,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-17 10:59:12,294 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-17 10:59:12,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-17 10:59:12,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-17 10:59:12,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-17 10:59:12,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-17 10:59:12,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-17 10:59:12,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-17 10:59:12,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-17 10:59:12,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-17 10:59:12,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-17 10:59:12,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-17 10:59:12,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-17 10:59:12,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-17 10:59:12,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=FINITE_AUTOMATA [2019-12-17 10:59:12,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-17 10:59:12,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-17 10:59:12,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-17 10:59:12,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-17 10:59:12,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-17 10:59:12,607 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-17 10:59:12,607 INFO L275 PluginConnector]: CDTParser initialized [2019-12-17 10:59:12,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkJoinInLoop.c [2019-12-17 10:59:12,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237a6e6e/efc4fe967acf418abaa4009f63075f8d/FLAG07855fd03 [2019-12-17 10:59:13,166 INFO L306 CDTParser]: Found 1 translation units. [2019-12-17 10:59:13,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkJoinInLoop.c [2019-12-17 10:59:13,167 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:59:13,168 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:59:13,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237a6e6e/efc4fe967acf418abaa4009f63075f8d/FLAG07855fd03 [2019-12-17 10:59:13,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237a6e6e/efc4fe967acf418abaa4009f63075f8d [2019-12-17 10:59:13,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-17 10:59:13,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-17 10:59:13,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-17 10:59:13,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-17 10:59:13,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-17 10:59:13,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcc59e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13, skipping insertion in model container [2019-12-17 10:59:13,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-17 10:59:13,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-17 10:59:13,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:59:13,803 INFO L203 MainTranslator]: Completed pre-run [2019-12-17 10:59:13,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:59:13,828 INFO L208 MainTranslator]: Completed translation [2019-12-17 10:59:13,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13 WrapperNode [2019-12-17 10:59:13,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-17 10:59:13,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-17 10:59:13,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-17 10:59:13,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-17 10:59:13,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-17 10:59:13,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-17 10:59:13,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-17 10:59:13,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-17 10:59:13,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (1/1) ... [2019-12-17 10:59:13,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-17 10:59:13,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-17 10:59:13,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-17 10:59:13,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-17 10:59:13,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (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 [2019-12-17 10:59:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-17 10:59:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-12-17 10:59:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-12-17 10:59:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-17 10:59:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-17 10:59:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-17 10:59:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-17 10:59:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-17 10:59:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-17 10:59:13,957 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-17 10:59:14,221 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-17 10:59:14,222 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-17 10:59:14,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:14 BoogieIcfgContainer [2019-12-17 10:59:14,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-17 10:59:14,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-17 10:59:14,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-17 10:59:14,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-17 10:59:14,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:59:13" (1/3) ... [2019-12-17 10:59:14,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd44079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:14, skipping insertion in model container [2019-12-17 10:59:14,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:13" (2/3) ... [2019-12-17 10:59:14,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd44079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:14, skipping insertion in model container [2019-12-17 10:59:14,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:14" (3/3) ... [2019-12-17 10:59:14,234 INFO L109 eAbstractionObserver]: Analyzing ICFG forkJoinInLoop.c [2019-12-17 10:59:14,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-17 10:59:14,244 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-17 10:59:14,251 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-17 10:59:14,253 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-17 10:59:14,287 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,288 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,288 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,288 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,288 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,292 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,293 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,293 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,293 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,293 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:59:14,318 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-17 10:59:14,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-17 10:59:14,339 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-17 10:59:14,339 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-17 10:59:14,339 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-17 10:59:14,339 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-17 10:59:14,339 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-17 10:59:14,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-17 10:59:14,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-17 10:59:14,357 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 46 transitions [2019-12-17 10:59:14,371 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 59 states. [2019-12-17 10:59:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2019-12-17 10:59:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-17 10:59:14,379 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:59:14,380 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:59:14,380 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:59:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:59:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1741648071, now seen corresponding path program 1 times [2019-12-17 10:59:14,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:59:14,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646978803] [2019-12-17 10:59:14,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:59:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:59:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:59:14,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646978803] [2019-12-17 10:59:14,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:59:14,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-17 10:59:14,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917403234] [2019-12-17 10:59:14,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-17 10:59:14,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:59:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-17 10:59:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-17 10:59:14,555 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2019-12-17 10:59:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:59:14,572 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2019-12-17 10:59:14,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-17 10:59:14,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-12-17 10:59:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:59:14,585 INFO L225 Difference]: With dead ends: 51 [2019-12-17 10:59:14,585 INFO L226 Difference]: Without dead ends: 51 [2019-12-17 10:59:14,587 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-17 10:59:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-17 10:59:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-12-17 10:59:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-17 10:59:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-12-17 10:59:14,628 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 12 [2019-12-17 10:59:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:59:14,629 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-12-17 10:59:14,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-17 10:59:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-12-17 10:59:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-17 10:59:14,630 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:59:14,630 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:59:14,631 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:59:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:59:14,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1313432728, now seen corresponding path program 1 times [2019-12-17 10:59:14,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:59:14,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713561985] [2019-12-17 10:59:14,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:59:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:59:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:59:14,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713561985] [2019-12-17 10:59:14,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:59:14,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-17 10:59:14,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122573784] [2019-12-17 10:59:14,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-17 10:59:14,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:59:14,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-17 10:59:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-17 10:59:14,724 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2019-12-17 10:59:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:59:14,828 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2019-12-17 10:59:14,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-17 10:59:14,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-17 10:59:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:59:14,831 INFO L225 Difference]: With dead ends: 55 [2019-12-17 10:59:14,832 INFO L226 Difference]: Without dead ends: 55 [2019-12-17 10:59:14,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-17 10:59:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-17 10:59:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-12-17 10:59:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-17 10:59:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2019-12-17 10:59:14,845 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 14 [2019-12-17 10:59:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:59:14,846 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2019-12-17 10:59:14,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-17 10:59:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2019-12-17 10:59:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-17 10:59:14,848 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:59:14,848 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:59:14,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:59:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:59:14,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1967712229, now seen corresponding path program 1 times [2019-12-17 10:59:14,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:59:14,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822692585] [2019-12-17 10:59:14,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:59:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:59:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:59:15,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822692585] [2019-12-17 10:59:15,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212849219] [2019-12-17 10:59:15,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:59:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:59:15,152 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-17 10:59:15,160 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:59:15,247 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-17 10:59:15,250 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,255 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,256 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,257 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-17 10:59:15,284 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,285 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-12-17 10:59:15,287 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,289 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,290 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,290 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2019-12-17 10:59:15,342 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-12-17 10:59:15,344 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,354 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,356 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-17 10:59:15,357 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2019-12-17 10:59:15,568 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2019-12-17 10:59:15,569 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,582 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,584 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-17 10:59:15,584 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:19 [2019-12-17 10:59:15,622 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-12-17 10:59:15,623 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,629 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-17 10:59:15,630 INFO L534 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-17 10:59:15,630 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-12-17 10:59:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:59:15,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:59:15,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-12-17 10:59:15,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916734435] [2019-12-17 10:59:15,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-17 10:59:15,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:59:15,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-17 10:59:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-17 10:59:15,645 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 15 states. [2019-12-17 10:59:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:59:16,080 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2019-12-17 10:59:16,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-17 10:59:16,080 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2019-12-17 10:59:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:59:16,082 INFO L225 Difference]: With dead ends: 125 [2019-12-17 10:59:16,082 INFO L226 Difference]: Without dead ends: 125 [2019-12-17 10:59:16,083 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2019-12-17 10:59:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-12-17 10:59:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2019-12-17 10:59:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-12-17 10:59:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2019-12-17 10:59:16,095 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 37 [2019-12-17 10:59:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:59:16,095 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2019-12-17 10:59:16,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-17 10:59:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2019-12-17 10:59:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-12-17 10:59:16,098 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:59:16,098 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:59:16,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:59:16,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:59:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:59:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2013134328, now seen corresponding path program 2 times [2019-12-17 10:59:16,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:59:16,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660803387] [2019-12-17 10:59:16,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:59:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-17 10:59:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-17 10:59:16,417 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-17 10:59:16,417 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-17 10:59:16,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:59:16 BasicIcfg [2019-12-17 10:59:16,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-17 10:59:16,502 INFO L168 Benchmark]: Toolchain (without parser) took 2990.67 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 100.9 MB in the beginning and 106.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,503 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.49 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 178.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 177.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,507 INFO L168 Benchmark]: Boogie Preprocessor took 24.39 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 175.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,508 INFO L168 Benchmark]: RCFGBuilder took 333.56 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 159.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,509 INFO L168 Benchmark]: TraceAbstraction took 2274.44 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 159.1 MB in the beginning and 106.9 MB in the end (delta: 52.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2019-12-17 10:59:16,513 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.49 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 178.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 177.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.39 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 175.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.56 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 159.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2274.44 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 159.1 MB in the beginning and 106.9 MB in the end (delta: 52.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 pthread_t thread_id; [L21] 0 int x = 1; [L23] EXPR 0 \read(x) [L23] COND TRUE 0 x < 3 [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND TRUE 0 x < 3 VAL [i={5:0}, i={5:0}, y=4] [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND FALSE 0 !(x < 3) VAL [i={5:0}, i={5:0}, y=4] [L30] 0 CodeAnnotStmt[Assertion] VAL [i={5:0}, i={5:0}, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 224 SDslu, 255 SDs, 0 SdLazy, 160 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 20 QuantifiedInterpolants, 27358 SizeOfPredicates, 8 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...