/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-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:54:03,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:54:03,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:54:03,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 07:54:03,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:54:03,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:54:03,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:54:03,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:54:03,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:54:03,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:54:03,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:54:03,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:54:03,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:54:03,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:54:03,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:54:03,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:54:03,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:54:03,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:54:03,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:54:03,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:54:03,838 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-PN-RepeatedVariableLbe.epf [2021-03-25 07:54:03,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:54:03,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:54:03,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:54:03,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:54:03,882 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:54:03,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:54:03,883 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:54:03,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:54:03,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:54:03,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:54:03,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:54:03,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:54:03,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:54:03,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:54:03,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:54:03,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:54:03,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:54:03,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:54:03,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:54:03,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:03,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:54:03,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:54:03,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:54:03,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:54:03,887 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:54:04,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:54:04,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:54:04,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:54:04,207 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:54:04,208 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:54:04,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2021-03-25 07:54:04,689 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2021-03-25 07:54:04,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:54:04,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:54:04,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:04,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:54:04,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:54:04,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:04,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:54:04,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:54:04,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:54:04,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... [2021-03-25 07:54:04,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:54:04,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:54:04,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:54:04,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:54:04,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:04,846 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2021-03-25 07:54:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-03-25 07:54:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-03-25 07:54:04,846 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-03-25 07:54:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:54:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:54:04,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 07:54:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:54:04,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:54:04,848 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:54:04,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:54:04,939 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 07:54:04,940 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:04 BoogieIcfgContainer [2021-03-25 07:54:04,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:54:04,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:54:04,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:54:04,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:54:04,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:04" (1/2) ... [2021-03-25 07:54:04,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544c9c6 and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:54:04, skipping insertion in model container [2021-03-25 07:54:04,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:04" (2/2) ... [2021-03-25 07:54:04,959 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2021-03-25 07:54:04,964 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:54:04,966 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:54:04,967 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:54:04,997 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:04,997 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:05,005 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:05,010 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:05,016 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:05,041 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 07:54:05,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 07:54:05,096 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:05,096 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:05,096 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:05,096 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:05,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:05,096 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:05,096 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:05,096 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:05,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 16 transitions, 51 flow [2021-03-25 07:54:05,132 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 07:54:05,133 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:05,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 17 events. 1/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 14. Up to 3 conditions per place. [2021-03-25 07:54:05,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 16 transitions, 51 flow [2021-03-25 07:54:05,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 12 transitions, 39 flow [2021-03-25 07:54:05,139 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:05,147 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 12 transitions, 39 flow [2021-03-25 07:54:05,151 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 12 transitions, 39 flow [2021-03-25 07:54:05,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 12 transitions, 39 flow [2021-03-25 07:54:05,160 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-25 07:54:05,160 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:05,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 13 events. 1/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 12. Up to 3 conditions per place. [2021-03-25 07:54:05,161 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 07:54:05,244 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 07:54:05,244 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:54:05,246 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 108 [2021-03-25 07:54:05,269 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 07:54:05,269 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:05,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:05,270 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:54:05,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, fooErr0INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2034643757, now seen corresponding path program 1 times [2021-03-25 07:54:05,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:05,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111545410] [2021-03-25 07:54:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:05,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:05,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:05,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111545410] [2021-03-25 07:54:05,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:05,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 07:54:05,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812038898] [2021-03-25 07:54:05,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:05,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:05,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:05,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:05,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 19 [2021-03-25 07:54:05,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-03-25 07:54:05,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:05,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 19 [2021-03-25 07:54:05,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:05,451 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-25 07:54:05,451 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:05,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 10 events. 1/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 12. Up to 4 conditions per place. [2021-03-25 07:54:05,452 INFO L132 encePairwiseOnDemand]: 16/19 looper letters, 1 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2021-03-25 07:54:05,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 39 flow [2021-03-25 07:54:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2021-03-25 07:54:05,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2021-03-25 07:54:05,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 43 transitions. [2021-03-25 07:54:05,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 43 transitions. [2021-03-25 07:54:05,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:05,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 43 transitions. [2021-03-25 07:54:05,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:05,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-03-25 07:54:05,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-03-25 07:54:05,474 INFO L185 Difference]: Start difference. First operand has 14 places, 9 transitions, 33 flow. Second operand 3 states and 43 transitions. [2021-03-25 07:54:05,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 39 flow [2021-03-25 07:54:05,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 29 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 07:54:05,489 INFO L241 Difference]: Finished difference. Result has 13 places, 9 transitions, 31 flow [2021-03-25 07:54:05,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2021-03-25 07:54:05,492 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -1 predicate places. [2021-03-25 07:54:05,492 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:05,492 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 9 transitions, 31 flow [2021-03-25 07:54:05,493 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 9 transitions, 31 flow [2021-03-25 07:54:05,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 9 transitions, 31 flow [2021-03-25 07:54:05,501 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-25 07:54:05,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:05,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 8. Up to 4 conditions per place. [2021-03-25 07:54:05,502 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-25 07:54:05,503 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:05,503 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:05,504 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 07:54:05,505 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 31 flow [2021-03-25 07:54:05,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-03-25 07:54:05,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:05,506 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:54:05,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:54:05,506 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, fooErr0INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2034645710, now seen corresponding path program 1 times [2021-03-25 07:54:05,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:05,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89471088] [2021-03-25 07:54:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:05,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:05,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:05,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:05,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:05,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:05,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:05,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89471088] [2021-03-25 07:54:05,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:05,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:05,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063302145] [2021-03-25 07:54:05,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:05,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:05,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 19 [2021-03-25 07:54:05,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-03-25 07:54:05,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:05,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 19 [2021-03-25 07:54:05,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:05,556 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 07:54:05,557 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:54:05,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 8 events. 1/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 10. Up to 3 conditions per place. [2021-03-25 07:54:05,560 INFO L132 encePairwiseOnDemand]: 17/19 looper letters, 0 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2021-03-25 07:54:05,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 8 transitions, 30 flow [2021-03-25 07:54:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2021-03-25 07:54:05,566 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2021-03-25 07:54:05,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2021-03-25 07:54:05,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2021-03-25 07:54:05,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:05,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2021-03-25 07:54:05,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-03-25 07:54:05,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-03-25 07:54:05,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-03-25 07:54:05,570 INFO L185 Difference]: Start difference. First operand has 13 places, 9 transitions, 31 flow. Second operand 3 states and 53 transitions. [2021-03-25 07:54:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 8 transitions, 30 flow [2021-03-25 07:54:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 23 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:54:05,571 INFO L241 Difference]: Finished difference. Result has 12 places, 8 transitions, 23 flow [2021-03-25 07:54:05,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=23, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2021-03-25 07:54:05,572 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2021-03-25 07:54:05,572 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:05,572 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 8 transitions, 23 flow [2021-03-25 07:54:05,572 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 8 transitions, 23 flow [2021-03-25 07:54:05,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 23 flow [2021-03-25 07:54:05,579 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 07:54:05,579 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:05,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-25 07:54:05,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 6 [2021-03-25 07:54:05,580 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:05,580 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:05,581 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 07:54:05,581 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 23 flow [2021-03-25 07:54:05,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-03-25 07:54:05,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:05,582 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:05,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:54:05,582 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, fooErr0INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1350489963, now seen corresponding path program 1 times [2021-03-25 07:54:05,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:05,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935992653] [2021-03-25 07:54:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:54:05,599 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:54:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:54:05,603 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:54:05,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:54:05,620 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:54:05,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:54:05,634 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:54:05 BasicIcfg [2021-03-25 07:54:05,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:54:05,636 INFO L168 Benchmark]: Toolchain (without parser) took 893.16 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 205.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:05,637 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:05,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.93 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:05,642 INFO L168 Benchmark]: Boogie Preprocessor took 11.56 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 781.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:05,642 INFO L168 Benchmark]: RCFGBuilder took 159.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 225.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:05,643 INFO L168 Benchmark]: TraceAbstraction took 681.29 ms. Allocated memory is still 255.9 MB. Free memory was 242.1 MB in the beginning and 205.0 MB in the end (delta: 37.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:05,646 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 0.49 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.93 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.56 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 781.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 159.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 225.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 681.29 ms. Allocated memory is still 255.9 MB. Free memory was 242.1 MB in the beginning and 205.0 MB in the end (delta: 37.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 93.1ms, 17 PlacesBefore, 14 PlacesAfterwards, 12 TransitionsBefore, 9 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 13 PlacesBefore, 13 PlacesAfterwards, 9 TransitionsBefore, 9 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: 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: SyntacticIndependenceRelation.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] , Cache 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] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1ms, 12 PlacesBefore, 12 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 6 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: 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: SyntacticIndependenceRelation.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] , Cache 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] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 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] [L30] 1 g := g + 1; [L36] 2 res := 23; [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 CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 535.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 101.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 169.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 6, 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: 8.5ms SsaConstructionTime, 29.1ms SatisfiabilityAnalysisTime, 66.1ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...