/usr/bin/java -Xmx8000000000 -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/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 18:52:49,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 18:52:49,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 18:52:49,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 18:52:49,388 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 [2021-06-12 18:52:49,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 18:52:49,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 18:52:49,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 18:52:49,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 18:52:49,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 18:52:49,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 18:52:49,423 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 18:52:49,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 18:52:49,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 18:52:49,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 18:52:49,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 18:52:49,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 18:52:49,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 18:52:49,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 18:52:49,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 18:52:49,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 18:52:49,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 18:52:49,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 18:52:49,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 18:52:49,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 18:52:49,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 18:52:49,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 18:52:49,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 18:52:49,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 18:52:49,698 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 18:52:49,699 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 18:52:49,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl [2021-06-12 18:52:49,700 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl' [2021-06-12 18:52:49,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 18:52:49,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 18:52:49,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 18:52:49,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 18:52:49,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 18:52:49,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 18:52:49,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 18:52:49,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 18:52:49,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 18:52:49,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/1) ... [2021-06-12 18:52:49,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 18:52:49,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 18:52:49,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 18:52:49,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 18:52:49,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (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 [2021-06-12 18:52:49,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2021-06-12 18:52:49,834 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-06-12 18:52:49,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-06-12 18:52:49,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-12 18:52:49,834 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-12 18:52:49,834 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-12 18:52:49,834 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-12 18:52:49,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 18:52:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 18:52:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 18:52:49,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 18:52:49,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 18:52:49,945 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 18:52:49,947 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:52:49 BoogieIcfgContainer [2021-06-12 18:52:49,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 18:52:49,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 18:52:49,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 18:52:49,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 18:52:49,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:49" (1/2) ... [2021-06-12 18:52:49,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166af451 and model type ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 06:52:49, skipping insertion in model container [2021-06-12 18:52:49,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:52:49" (2/2) ... [2021-06-12 18:52:49,953 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure02.bpl [2021-06-12 18:52:49,957 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 18:52:49,957 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 18:52:49,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 18:52:49,958 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 18:52:49,974 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,974 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,975 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,980 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,982 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:49,984 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 18:52:50,000 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 18:52:50,015 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:50,015 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:50,016 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:50,016 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:50,016 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:50,016 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:50,016 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:50,016 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooThread1of1ForFork1======== [2021-06-12 18:52:50,022 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2021-06-12 18:52:50,030 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:52:50,037 INFO L301 ceAbstractionStarter]: Result for error location fooThread1of1ForFork1 was SAFE (1/5) [2021-06-12 18:52:50,039 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 18:52:50,042 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:50,042 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:50,042 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:50,042 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:50,042 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:50,042 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:50,042 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:50,043 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == bar======== [2021-06-12 18:52:50,044 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2021-06-12 18:52:50,046 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:52:50,048 INFO L301 ceAbstractionStarter]: Result for error location bar was SAFE (2/5) [2021-06-12 18:52:50,048 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 18:52:50,050 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:50,050 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:50,051 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:50,051 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:50,051 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:50,051 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:50,051 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:50,051 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == foo======== [2021-06-12 18:52:50,052 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2021-06-12 18:52:50,055 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:52:50,056 INFO L301 ceAbstractionStarter]: Result for error location foo was SAFE (3/5) [2021-06-12 18:52:50,056 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 18:52:50,058 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:50,059 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:50,059 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:50,059 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:50,059 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:50,059 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:50,059 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:50,059 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 18:52:50,060 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2021-06-12 18:52:50,063 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:52:50,065 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-12 18:52:50,065 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 18:52:50,067 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:50,067 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:50,067 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:50,067 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:50,067 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:50,067 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:50,067 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:50,068 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == barThread1of1ForFork0======== [2021-06-12 18:52:50,069 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2021-06-12 18:52:50,071 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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) [2021-06-12 18:52:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-12 18:52:50,071 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:50,072 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-12 18:52:50,072 INFO L430 AbstractCegarLoop]: === Iteration 1 === [barErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:50,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash 43765016, now seen corresponding path program 1 times [2021-06-12 18:52:50,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:50,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620746981] [2021-06-12 18:52:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:50,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:50,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620746981] [2021-06-12 18:52:50,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620746981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:50,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:50,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 18:52:50,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55391261] [2021-06-12 18:52:50,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 18:52:50,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 18:52:50,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 18:52:50,311 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 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 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:50,355 INFO L93 Difference]: Finished difference Result 29 states and 52 transitions. [2021-06-12 18:52:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 18:52:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-06-12 18:52:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:50,361 INFO L225 Difference]: With dead ends: 29 [2021-06-12 18:52:50,361 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 18:52:50,362 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-12 18:52:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 18:52:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 18:52:50,378 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) [2021-06-12 18:52:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 18:52:50,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-06-12 18:52:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:50,379 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 18:52:50,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 18:52:50,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:52:50,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 18:52:50,380 INFO L301 ceAbstractionStarter]: Result for error location barThread1of1ForFork0 was SAFE (5/5) [2021-06-12 18:52:50,381 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 18:52:50,383 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 06:52:50 BasicIcfg [2021-06-12 18:52:50,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 18:52:50,384 INFO L168 Benchmark]: Toolchain (without parser) took 648.26 ms. Allocated memory is still 183.5 MB. Free memory was 163.5 MB in the beginning and 156.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-06-12 18:52:50,385 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:52:50,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.38 ms. Allocated memory is still 183.5 MB. Free memory was 163.4 MB in the beginning and 162.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:52:50,386 INFO L168 Benchmark]: Boogie Preprocessor took 9.48 ms. Allocated memory is still 183.5 MB. Free memory was 162.0 MB in the beginning and 161.0 MB in the end (delta: 945.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 18:52:50,387 INFO L168 Benchmark]: RCFGBuilder took 167.72 ms. Allocated memory is still 183.5 MB. Free memory was 161.0 MB in the beginning and 152.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-12 18:52:50,387 INFO L168 Benchmark]: TraceAbstraction took 435.43 ms. Allocated memory is still 183.5 MB. Free memory was 152.1 MB in the beginning and 156.1 MB in the end (delta: -4.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:52:50,406 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 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.38 ms. Allocated memory is still 183.5 MB. Free memory was 163.4 MB in the beginning and 162.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.48 ms. Allocated memory is still 183.5 MB. Free memory was 162.0 MB in the beginning and 161.0 MB in the end (delta: 945.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 167.72 ms. Allocated memory is still 183.5 MB. Free memory was 161.0 MB in the beginning and 152.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 435.43 ms. Allocated memory is still 183.5 MB. Free memory was 152.1 MB in the beginning and 156.1 MB in the end (delta: -4.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: fooThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 6.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: bar with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: barThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 313.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 61.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1ms SsaConstructionTime, 18.5ms SatisfiabilityAnalysisTime, 144.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...