/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:22:27,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:22:27,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:22:27,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:22:27,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:22:27,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:22:27,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:22:27,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:22:27,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:22:27,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:22:27,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:22:27,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:22:27,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:22:27,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:22:27,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:22:27,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:22:27,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:22:27,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:22:27,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:22:27,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:22:27,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:22:27,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:22:27,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:22:27,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:22:27,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 08:22:27,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:22:27,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:22:27,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:22:27,370 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-NoLbe.epf [2021-06-13 08:22:27,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:22:27,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:22:27,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:22:27,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:22:27,388 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:22:27,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:22:27,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:22:27,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:22:27,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:22:27,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:22:27,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:22:27,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:22:27,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:22:27,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:22:27,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:22:27,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:22:27,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:22:27,627 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:22:27,628 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:22:27,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2021-06-13 08:22:27,628 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2021-06-13 08:22:27,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:22:27,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:22:27,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:22:27,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:22:27,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:22:27,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:22:27,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:22:27,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:22:27,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:22:27,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/1) ... [2021-06-13 08:22:27,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:22:27,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:22:27,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:22:27,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:22:27,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (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 [2021-06-13 08:22:27,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2021-06-13 08:22:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-13 08:22:27,743 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-06-13 08:22:27,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:22:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:22:27,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:22:27,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:22:27,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:22:27,846 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:22:27,848 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:22:27 BoogieIcfgContainer [2021-06-13 08:22:27,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:22:27,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:22:27,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:22:27,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:22:27,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:27" (1/2) ... [2021-06-13 08:22:27,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4bec5 and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:22:27, skipping insertion in model container [2021-06-13 08:22:27,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:22:27" (2/2) ... [2021-06-13 08:22:27,853 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2021-06-13 08:22:27,859 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:22:27,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:22:27,861 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:22:27,886 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,886 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,888 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,889 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,890 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,890 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,891 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,891 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,891 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,891 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,892 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,892 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,895 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,902 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,906 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:27,920 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 08:22:27,936 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 08:22:27,948 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:22:27,948 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:22:27,948 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:22:27,948 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:22:27,948 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:22:27,948 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:22:27,948 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:22:27,948 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:22:27,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 18 transitions, 60 flow [2021-06-13 08:22:27,967 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-06-13 08:22:27,967 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 08:22:27,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 46 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-13 08:22:27,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 18 transitions, 60 flow [2021-06-13 08:22:27,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 13 transitions, 44 flow [2021-06-13 08:22:27,974 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-13 08:22:27,974 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 08:22:27,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:27,975 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:27,975 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1039076790, now seen corresponding path program 1 times [2021-06-13 08:22:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:27,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785109082] [2021-06-13 08:22:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:28,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:22:28,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-13 08:22:28,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:28,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:28,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785109082] [2021-06-13 08:22:28,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785109082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:28,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:28,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 08:22:28,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891072471] [2021-06-13 08:22:28,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 08:22:28,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:28,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 08:22:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 08:22:28,110 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 18 [2021-06-13 08:22:28,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-06-13 08:22:28,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:28,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 18 [2021-06-13 08:22:28,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:28,170 INFO L129 PetriNetUnfolder]: 4/24 cut-off events. [2021-06-13 08:22:28,170 INFO L130 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2021-06-13 08:22:28,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 24 events. 4/24 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 37. Up to 9 conditions per place. [2021-06-13 08:22:28,173 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 6 selfloop transitions, 2 changer transitions 1/16 dead transitions. [2021-06-13 08:22:28,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 74 flow [2021-06-13 08:22:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 08:22:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 08:22:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2021-06-13 08:22:28,179 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-06-13 08:22:28,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 65 transitions. [2021-06-13 08:22:28,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 65 transitions. [2021-06-13 08:22:28,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:28,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 65 transitions. [2021-06-13 08:22:28,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2021-06-13 08:22:28,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-06-13 08:22:28,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-06-13 08:22:28,186 INFO L185 Difference]: Start difference. First operand has 21 places, 13 transitions, 44 flow. Second operand 5 states and 65 transitions. [2021-06-13 08:22:28,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 74 flow [2021-06-13 08:22:28,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 58 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-13 08:22:28,189 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 35 flow [2021-06-13 08:22:28,190 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2021-06-13 08:22:28,190 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2021-06-13 08:22:28,190 INFO L482 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 35 flow [2021-06-13 08:22:28,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-06-13 08:22:28,191 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:28,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:28,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:22:28,191 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1187485911, now seen corresponding path program 1 times [2021-06-13 08:22:28,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:28,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568487416] [2021-06-13 08:22:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:28,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-13 08:22:28,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:28,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:28,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568487416] [2021-06-13 08:22:28,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568487416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:28,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:28,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:22:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850200508] [2021-06-13 08:22:28,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 08:22:28,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 08:22:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 08:22:28,228 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 18 [2021-06-13 08:22:28,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-06-13 08:22:28,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:28,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 18 [2021-06-13 08:22:28,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:28,257 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-06-13 08:22:28,257 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:22:28,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 18 events. 2/18 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 25. Up to 5 conditions per place. [2021-06-13 08:22:28,258 INFO L132 encePairwiseOnDemand]: 14/18 looper letters, 4 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-06-13 08:22:28,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 56 flow [2021-06-13 08:22:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 08:22:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 08:22:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2021-06-13 08:22:28,259 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7 [2021-06-13 08:22:28,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 63 transitions. [2021-06-13 08:22:28,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 63 transitions. [2021-06-13 08:22:28,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:28,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 63 transitions. [2021-06-13 08:22:28,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2021-06-13 08:22:28,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-06-13 08:22:28,260 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-06-13 08:22:28,260 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 35 flow. Second operand 5 states and 63 transitions. [2021-06-13 08:22:28,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 56 flow [2021-06-13 08:22:28,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 49 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-06-13 08:22:28,261 INFO L241 Difference]: Finished difference. Result has 21 places, 11 transitions, 33 flow [2021-06-13 08:22:28,262 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=33, PETRI_PLACES=21, PETRI_TRANSITIONS=11} [2021-06-13 08:22:28,262 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2021-06-13 08:22:28,262 INFO L482 AbstractCegarLoop]: Abstraction has has 21 places, 11 transitions, 33 flow [2021-06-13 08:22:28,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-06-13 08:22:28,262 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:28,262 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:28,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:22:28,262 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:28,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1047289434, now seen corresponding path program 1 times [2021-06-13 08:22:28,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:28,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580071098] [2021-06-13 08:22:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:22:28,268 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:22:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:22:28,271 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:22:28,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 08:22:28,279 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 08:22:28,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 08:22:28,281 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:22:28,287 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:22:28 BasicIcfg [2021-06-13 08:22:28,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:22:28,288 INFO L168 Benchmark]: Toolchain (without parser) took 634.43 ms. Allocated memory is still 191.9 MB. Free memory was 171.4 MB in the beginning and 144.9 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:28,288 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 191.9 MB. Free memory is still 172.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:22:28,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 191.9 MB. Free memory was 171.4 MB in the beginning and 169.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:28,289 INFO L168 Benchmark]: Boogie Preprocessor took 8.59 ms. Allocated memory is still 191.9 MB. Free memory was 169.9 MB in the beginning and 169.1 MB in the end (delta: 840.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:28,289 INFO L168 Benchmark]: RCFGBuilder took 159.40 ms. Allocated memory is still 191.9 MB. Free memory was 169.0 MB in the beginning and 160.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:28,290 INFO L168 Benchmark]: TraceAbstraction took 437.54 ms. Allocated memory is still 191.9 MB. Free memory was 160.2 MB in the beginning and 144.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:28,292 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 0.09 ms. Allocated memory is still 191.9 MB. Free memory is still 172.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 191.9 MB. Free memory was 171.4 MB in the beginning and 169.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 8.59 ms. Allocated memory is still 191.9 MB. Free memory was 169.9 MB in the beginning and 169.1 MB in the end (delta: 840.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 159.40 ms. Allocated memory is still 191.9 MB. Free memory was 169.0 MB in the beginning and 160.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 437.54 ms. Allocated memory is still 191.9 MB. Free memory was 160.2 MB in the beginning and 144.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L19] FORK 0 fork 42 increment(7); VAL [n=7] [L20] FORK 0 fork 42 increment(23); VAL [n=7] [L34] 2 res := n + 1; VAL [n=7, res=24] [L21] FORK 0 fork 42 increment(39); VAL [n=39, res=24] [L24] JOIN 2 join 42 assign x; VAL [n=39, res=24, x=24] [L28] 0 assert x == 8 || x == 40; VAL [n=39, res=24, x=24] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 334.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 119.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 17 SDslu, 7 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 10, 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: 3.4ms SsaConstructionTime, 17.2ms SatisfiabilityAnalysisTime, 92.7ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 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...