/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 16:33:26,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 16:33:26,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 16:33:26,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 16:33:26,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 16:33:26,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 16:33:26,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 16:33:26,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 16:33:26,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 16:33:26,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 16:33:26,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 16:33:26,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 16:33:26,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 16:33:26,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 16:33:26,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 16:33:26,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 16:33:26,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 16:33:26,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 16:33:26,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 16:33:26,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 16:33:26,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 16:33:26,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 16:33:26,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 16:33:26,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 16:33:26,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 16:33:26,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 16:33:26,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 16:33:26,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 16:33:26,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-16 16:33:26,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 16:33:26,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 16:33:26,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 16:33:26,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 16:33:26,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 16:33:26,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 16:33:26,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 16:33:26,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 16:33:26,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 16:33:26,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 16:33:26,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 16:33:26,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:33:26,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 16:33:26,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 16:33:26,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 16:33:26,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 16:33:26,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 16:33:26,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 16:33:26,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 16:33:26,479 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 16:33:26,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 16:33:26,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 16:33:26,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 16:33:26,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 16:33:26,812 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 16:33:26,813 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 16:33:26,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2021-06-16 16:33:26,814 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2021-06-16 16:33:26,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 16:33:26,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 16:33:26,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 16:33:26,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 16:33:26,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 16:33:26,846 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,852 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 16:33:26,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 16:33:26,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 16:33:26,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 16:33:26,868 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,869 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,869 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,870 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,871 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,872 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,873 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 16.06 04:33:26" (1/1) ... [2021-06-16 16:33:26,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 16:33:26,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 16:33:26,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 16:33:26,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 16:33:26,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:26" (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 [2021-06-16 16:33:26,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2021-06-16 16:33:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-16 16:33:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-06-16 16:33:26,943 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 16:33:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 16:33:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 16:33:26,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 16:33:27,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 16:33:27,073 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 16:33:27,076 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:33:27 BoogieIcfgContainer [2021-06-16 16:33:27,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 16:33:27,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 16:33:27,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 16:33:27,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 16:33:27,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:26" (1/2) ... [2021-06-16 16:33:27,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546f1e4e and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:33:27, skipping insertion in model container [2021-06-16 16:33:27,082 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 16.06 04:33:27" (2/2) ... [2021-06-16 16:33:27,084 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2021-06-16 16:33:27,092 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 16:33:27,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 16:33:27,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 16:33:27,094 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 16:33:27,124 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,126 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,130 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,131 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,132 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,132 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,133 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,133 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,133 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,133 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,135 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,135 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,137 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,143 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,148 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:33:27,174 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-16 16:33:27,192 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 16:33:27,219 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 16:33:27,219 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 16:33:27,219 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 16:33:27,219 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 16:33:27,219 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 16:33:27,219 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 16:33:27,219 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 16:33:27,219 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 16:33:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 94 states have (on average 1.5638297872340425) internal successors, (147), 147 states have internal predecessors, (147), 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) [2021-06-16 16:33:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-16 16:33:27,350 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:33:27,350 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:33:27,351 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:33:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:33:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1187485911, now seen corresponding path program 1 times [2021-06-16 16:33:27,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:33:27,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184822374] [2021-06-16 16:33:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:33:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:33:27,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:33:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 16:33:27,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:33:27,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 16:33:27,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 16:33:27,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 16:33:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:33:27,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:33:27,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184822374] [2021-06-16 16:33:27,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184822374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:33:27,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:33:27,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:33:27,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734344374] [2021-06-16 16:33:27,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 16:33:27,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:33:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 16:33:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 16:33:27,635 INFO L87 Difference]: Start difference. First operand has 148 states, 94 states have (on average 1.5638297872340425) internal successors, (147), 147 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-06-16 16:33:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:33:27,709 INFO L93 Difference]: Finished difference Result 139 states and 138 transitions. [2021-06-16 16:33:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 16:33:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-06-16 16:33:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:33:27,717 INFO L225 Difference]: With dead ends: 139 [2021-06-16 16:33:27,718 INFO L226 Difference]: Without dead ends: 76 [2021-06-16 16:33:27,719 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-16 16:33:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-06-16 16:33:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-06-16 16:33:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.293103448275862) internal successors, (75), 75 states have internal predecessors, (75), 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) [2021-06-16 16:33:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 75 transitions. [2021-06-16 16:33:27,750 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 75 transitions. Word has length 7 [2021-06-16 16:33:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:33:27,751 INFO L482 AbstractCegarLoop]: Abstraction has 76 states and 75 transitions. [2021-06-16 16:33:27,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-06-16 16:33:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 75 transitions. [2021-06-16 16:33:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-16 16:33:27,752 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:33:27,752 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:33:27,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 16:33:27,752 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:33:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:33:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1047289434, now seen corresponding path program 1 times [2021-06-16 16:33:27,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:33:27,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850937165] [2021-06-16 16:33:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:33:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 16:33:27,760 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 16:33:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 16:33:27,765 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 16:33:27,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-16 16:33:27,779 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-16 16:33:27,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 16:33:27,783 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 16:33:27,791 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 04:33:27 BasicIcfg [2021-06-16 16:33:27,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 16:33:27,794 INFO L168 Benchmark]: Toolchain (without parser) took 958.42 ms. Allocated memory is still 170.9 MB. Free memory was 151.3 MB in the beginning and 140.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:27,795 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 152.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:33:27,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 170.9 MB. Free memory was 151.2 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:27,797 INFO L168 Benchmark]: Boogie Preprocessor took 13.64 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 148.9 MB in the end (delta: 879.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:27,797 INFO L168 Benchmark]: RCFGBuilder took 201.04 ms. Allocated memory is still 170.9 MB. Free memory was 148.9 MB in the beginning and 140.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:27,799 INFO L168 Benchmark]: TraceAbstraction took 713.12 ms. Allocated memory is still 170.9 MB. Free memory was 140.1 MB in the beginning and 140.1 MB in the end (delta: -33.3 kB). Peak memory consumption was 1.1 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:27,804 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 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 152.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 170.9 MB. Free memory was 151.2 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.64 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 148.9 MB in the end (delta: 879.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 201.04 ms. Allocated memory is still 170.9 MB. Free memory was 148.9 MB in the beginning and 140.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 713.12 ms. Allocated memory is still 170.9 MB. Free memory was 140.1 MB in the beginning and 140.1 MB in the end (delta: -33.3 kB). Peak memory consumption was 1.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 222, positive: 186, positive conditional: 186, positive unconditional: 0, negative: 36, negative conditional: 36, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 195, positive: 186, positive conditional: 0, positive unconditional: 186, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 51, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 51, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 195, positive: 138, positive conditional: 0, positive unconditional: 138, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 51, unknown conditional: 0, unknown unconditional: 51] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Independence queries for same thread: 27 - 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. VerificationResult: UNSAFE, OverallTime: 564.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 96.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 121.3ms, PartialOrderReductionTime: 104.6ms, HoareTripleCheckerStatistics: 21 SDtfs, 30 SDslu, 27 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 132.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.6ms SsaConstructionTime, 23.7ms SatisfiabilityAnalysisTime, 180.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...