/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-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 03:00:49,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 03:00:49,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 03:00:49,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-06 03:00:49,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-06 03:00:49,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-06 03:00:49,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-06 03:00:49,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-06 03:00:49,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-06 03:00:49,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-06 03:00:49,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-06 03:00:49,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-06 03:00:49,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 03:00:49,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 03:00:49,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 03:00:49,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 03:00:49,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 03:00:49,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 03:00:49,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 03:00:49,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 03:00:49,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 03:00:49,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 03:00:49,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 03:00:49,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 03:00:49,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-06 03:00:49,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-06 03:00:49,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-06 03:00:49,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-06 03:00:49,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-06 03:00:49,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-06 03:00:49,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 03:00:49,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 03:00:49,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 03:00:49,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 03:00:49,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 03:00:49,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 03:00:49,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 03:00:49,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 03:00:49,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 03:00:49,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 03:00:49,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 03:00:49,829 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-POR-DelaySleep-NoLbe.epf [2021-06-06 03:00:49,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 03:00:49,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 03:00:49,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 03:00:49,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 03:00:49,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 03:00:49,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 03:00:49,849 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 03:00:49,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 03:00:49,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 03:00:49,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 03:00:49,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 03:00:49,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 03:00:49,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 03:00:49,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 03:00:49,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 03:00:49,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 03:00:49,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 03:00:49,853 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 03:00:49,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 03:00:50,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 03:00:50,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 03:00:50,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 03:00:50,123 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 03:00:50,124 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 03:00:50,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2021-06-06 03:00:50,142 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2021-06-06 03:00:50,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 03:00:50,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 03:00:50,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 03:00:50,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 03:00:50,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 03:00:50,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 03:00:50,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 03:00:50,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 03:00:50,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 03:00:50,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/1) ... [2021-06-06 03:00:50,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 03:00:50,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 03:00:50,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 03:00:50,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 03:00:50,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (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 [2021-06-06 03:00:50,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2021-06-06 03:00:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-06-06 03:00:50,262 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-06-06 03:00:50,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-06 03:00:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-06 03:00:50,263 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-06 03:00:50,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 03:00:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 03:00:50,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 03:00:50,264 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 03:00:50,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 03:00:50,376 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 03:00:50,378 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 03:00:50 BoogieIcfgContainer [2021-06-06 03:00:50,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 03:00:50,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 03:00:50,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 03:00:50,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 03:00:50,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 03:00:50" (1/2) ... [2021-06-06 03:00:50,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de3478d and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 03:00:50, skipping insertion in model container [2021-06-06 03:00:50,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 03:00:50" (2/2) ... [2021-06-06 03:00:50,386 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2021-06-06 03:00:50,393 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 03:00:50,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 03:00:50,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 03:00:50,395 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 03:00:50,422 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 03:00:50,422 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 03:00:50,428 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 03:00:50,433 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 03:00:50,438 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 03:00:50,463 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 03:00:50,479 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 03:00:50,526 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 03:00:50,526 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 03:00:50,526 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 03:00:50,526 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 03:00:50,526 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 03:00:50,526 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 03:00:50,526 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 03:00:50,526 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooThread1of1ForFork1======== [2021-06-06 03:00:50,619 INFO L301 ceAbstractionStarter]: Result for error location fooThread1of1ForFork1 was SAFE (1/3) [2021-06-06 03:00:50,620 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 03:00:50,633 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 03:00:50,633 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 03:00:50,633 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 03:00:50,633 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 03:00:50,633 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 03:00:50,633 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 03:00:50,633 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 03:00:50,633 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == foo======== [2021-06-06 03:00:50,686 INFO L301 ceAbstractionStarter]: Result for error location foo was SAFE (2/3) [2021-06-06 03:00:50,687 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-06 03:00:50,714 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 03:00:50,714 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 03:00:50,714 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 03:00:50,714 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 03:00:50,714 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 03:00:50,715 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 03:00:50,715 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 03:00:50,715 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 03:00:50,718 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 03:00:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 03:00:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash -890141268, now seen corresponding path program 1 times [2021-06-06 03:00:50,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 03:00:50,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923869398] [2021-06-06 03:00:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 03:00:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 03:00:50,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 03:00:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 03:00:50,806 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 03:00:50,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-06 03:00:50,818 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-06 03:00:50,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 03:00:50,819 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2021-06-06 03:00:50,822 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 03:00:50,828 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 03:00:50 BasicIcfg [2021-06-06 03:00:50,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 03:00:50,831 INFO L168 Benchmark]: Toolchain (without parser) took 656.11 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 306.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.0 GB. [2021-06-06 03:00:50,831 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory is still 318.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 03:00:50,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.74 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 316.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 03:00:50,836 INFO L168 Benchmark]: Boogie Preprocessor took 9.91 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.2 MB in the end (delta: 877.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 03:00:50,837 INFO L168 Benchmark]: RCFGBuilder took 171.62 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 305.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-06 03:00:50,838 INFO L168 Benchmark]: TraceAbstraction took 447.64 ms. Allocated memory is still 337.6 MB. Free memory was 305.4 MB in the beginning and 306.2 MB in the end (delta: -841.8 kB). Peak memory consumption was 579.2 kB. Max. memory is 16.0 GB. [2021-06-06 03:00:50,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory is still 318.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.74 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 316.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.91 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.2 MB in the end (delta: 877.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 171.62 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 305.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 447.64 ms. Allocated memory is still 337.6 MB. Free memory was 305.4 MB in the beginning and 306.2 MB in the end (delta: -841.8 kB). Peak memory consumption was 579.2 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 39, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 ], Maximal queried relation: 0, Independence queries for same thread: 9 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 39, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 ], Maximal queried relation: 0, Independence queries for same thread: 9 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 12, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 ], Maximal queried relation: 0, Independence queries for same thread: 3 - CounterExampleResult [Line: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L36] 2 res := 23; VAL [g=0, n=0, n=0, res=23, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, res=23, x=0] [L21] JOIN 2 join 2; VAL [g=1, n=0, n=0, res=23, x=0] [L23] 0 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: fooThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 118.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 76.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: foo with 1 thread instances CFG has 5 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 57.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 48.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 125.5ms, OverallIterations: 1, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 2.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.2ms SsaConstructionTime, 14.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...