/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 16:00:38,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 16:00:38,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 16:00:38,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 16:00:38,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 16:00:38,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 16:00:38,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 16:00:38,215 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-SemanticLbe.epf [2021-03-11 16:00:38,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 16:00:38,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 16:00:38,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 16:00:38,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 16:00:38,254 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 16:00:38,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 16:00:38,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 16:00:38,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 16:00:38,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 16:00:38,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 16:00:38,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 16:00:38,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 16:00:38,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 16:00:38,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 16:00:38,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 16:00:38,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 16:00:38,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 16:00:38,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 16:00:38,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 16:00:38,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 16:00:38,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 16:00:38,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 16:00:38,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 16:00:38,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 16:00:38,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 16:00:38,559 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 16:00:38,570 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 16:00:38,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl [2021-03-11 16:00:38,658 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl' [2021-03-11 16:00:38,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 16:00:38,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 16:00:38,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 16:00:38,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 16:00:38,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 16:00:38,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 16:00:38,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 16:00:38,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 16:00:38,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 16:00:38,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/1) ... [2021-03-11 16:00:38,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 16:00:38,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 16:00:38,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 16:00:38,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 16:00:38,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (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 [2021-03-11 16:00:38,980 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 16:00:38,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 16:00:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 16:00:38,981 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 16:00:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 16:00:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 16:00:38,981 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 16:00:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 16:00:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 16:00:38,981 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 16:00:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 16:00:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 16:00:38,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 16:00:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 16:00:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 16:00:38,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-11 16:00:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-11 16:00:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-11 16:00:38,983 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-11 16:00:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-11 16:00:38,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-11 16:00:38,983 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 16:00:39,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 16:00:39,157 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 16:00:39,159 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:00:39 BoogieIcfgContainer [2021-03-11 16:00:39,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 16:00:39,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 16:00:39,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 16:00:39,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 16:00:39,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:38" (1/2) ... [2021-03-11 16:00:39,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ccbfd and model type barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:00:39, skipping insertion in model container [2021-03-11 16:00:39,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:00:39" (2/2) ... [2021-03-11 16:00:39,165 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier-loop.wvr.bpl [2021-03-11 16:00:39,169 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 16:00:39,169 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 16:00:39,184 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 16:00:39,185 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 16:00:39,333 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-11 16:00:39,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-11 16:00:39,357 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 16:00:39,358 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 16:00:39,358 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 16:00:39,358 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 16:00:39,358 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 16:00:39,358 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 16:00:39,358 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 16:00:39,358 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 16:00:39,369 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 16:00:39,378 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 73 transitions, 218 flow [2021-03-11 16:00:39,380 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 73 transitions, 218 flow [2021-03-11 16:00:39,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 218 flow [2021-03-11 16:00:39,411 INFO L129 PetriNetUnfolder]: 8/61 cut-off events. [2021-03-11 16:00:39,412 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 16:00:39,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 61 events. 8/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-03-11 16:00:39,419 INFO L116 LiptonReduction]: Number of co-enabled transitions 1888 [2021-03-11 16:00:39,638 INFO L131 LiptonReduction]: Checked pairs total: 8304 [2021-03-11 16:00:39,638 INFO L133 LiptonReduction]: Total number of compositions: 3 [2021-03-11 16:00:39,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 71 transitions, 214 flow [2021-03-11 16:00:40,637 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10820 states, 10818 states have (on average 4.095673876871881) internal successors, (44307), 10819 states have internal predecessors, (44307), 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) [2021-03-11 16:00:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 10820 states, 10818 states have (on average 4.095673876871881) internal successors, (44307), 10819 states have internal predecessors, (44307), 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) [2021-03-11 16:00:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 16:00:40,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:40,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:40,776 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:40,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1993281752, now seen corresponding path program 1 times [2021-03-11 16:00:40,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:40,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777491810] [2021-03-11 16:00:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:40,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:40,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:40,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777491810] [2021-03-11 16:00:40,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:40,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 16:00:40,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23021428] [2021-03-11 16:00:40,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:40,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:40,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:40,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:40,997 INFO L87 Difference]: Start difference. First operand has 10820 states, 10818 states have (on average 4.095673876871881) internal successors, (44307), 10819 states have internal predecessors, (44307), 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 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-03-11 16:00:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:41,221 INFO L93 Difference]: Finished difference Result 11213 states and 45853 transitions. [2021-03-11 16:00:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-03-11 16:00:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:41,338 INFO L225 Difference]: With dead ends: 11213 [2021-03-11 16:00:41,338 INFO L226 Difference]: Without dead ends: 11192 [2021-03-11 16:00:41,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2021-03-11 16:00:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 10961. [2021-03-11 16:00:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 10960 states have (on average 4.091240875912408) internal successors, (44840), 10960 states have internal predecessors, (44840), 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) [2021-03-11 16:00:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 44840 transitions. [2021-03-11 16:00:42,171 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 44840 transitions. Word has length 22 [2021-03-11 16:00:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:42,172 INFO L480 AbstractCegarLoop]: Abstraction has 10961 states and 44840 transitions. [2021-03-11 16:00:42,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-03-11 16:00:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 44840 transitions. [2021-03-11 16:00:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 16:00:42,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:42,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:42,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 16:00:42,213 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash 459447809, now seen corresponding path program 1 times [2021-03-11 16:00:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:42,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580076635] [2021-03-11 16:00:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:42,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:42,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:42,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:42,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:42,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:42,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:42,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580076635] [2021-03-11 16:00:42,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:42,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:42,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002375380] [2021-03-11 16:00:42,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:42,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:42,270 INFO L87 Difference]: Start difference. First operand 10961 states and 44840 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:42,553 INFO L93 Difference]: Finished difference Result 13037 states and 52624 transitions. [2021-03-11 16:00:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-03-11 16:00:42,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:42,644 INFO L225 Difference]: With dead ends: 13037 [2021-03-11 16:00:42,645 INFO L226 Difference]: Without dead ends: 12720 [2021-03-11 16:00:42,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2021-03-11 16:00:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 11888. [2021-03-11 16:00:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11888 states, 11887 states have (on average 4.03516446538235) internal successors, (47966), 11887 states have internal predecessors, (47966), 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) [2021-03-11 16:00:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11888 states to 11888 states and 47966 transitions. [2021-03-11 16:00:43,370 INFO L78 Accepts]: Start accepts. Automaton has 11888 states and 47966 transitions. Word has length 30 [2021-03-11 16:00:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:43,371 INFO L480 AbstractCegarLoop]: Abstraction has 11888 states and 47966 transitions. [2021-03-11 16:00:43,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 11888 states and 47966 transitions. [2021-03-11 16:00:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 16:00:43,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:43,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:43,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 16:00:43,407 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1257170397, now seen corresponding path program 1 times [2021-03-11 16:00:43,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:43,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950060957] [2021-03-11 16:00:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:43,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:43,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:43,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:43,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:43,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:43,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950060957] [2021-03-11 16:00:43,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:43,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:43,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530146890] [2021-03-11 16:00:43,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:43,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:43,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:43,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:43,436 INFO L87 Difference]: Start difference. First operand 11888 states and 47966 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:43,709 INFO L93 Difference]: Finished difference Result 11680 states and 45148 transitions. [2021-03-11 16:00:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-03-11 16:00:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:43,781 INFO L225 Difference]: With dead ends: 11680 [2021-03-11 16:00:43,782 INFO L226 Difference]: Without dead ends: 9377 [2021-03-11 16:00:43,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9377 states. [2021-03-11 16:00:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9377 to 9377. [2021-03-11 16:00:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 9376 states have (on average 3.8412969283276452) internal successors, (36016), 9376 states have internal predecessors, (36016), 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) [2021-03-11 16:00:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 36016 transitions. [2021-03-11 16:00:44,506 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 36016 transitions. Word has length 30 [2021-03-11 16:00:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:44,506 INFO L480 AbstractCegarLoop]: Abstraction has 9377 states and 36016 transitions. [2021-03-11 16:00:44,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 36016 transitions. [2021-03-11 16:00:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 16:00:44,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:44,541 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:44,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 16:00:44,541 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1305251917, now seen corresponding path program 1 times [2021-03-11 16:00:44,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:44,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946709468] [2021-03-11 16:00:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:44,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:44,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:44,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:44,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:44,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:44,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:44,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946709468] [2021-03-11 16:00:44,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:44,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:44,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990853679] [2021-03-11 16:00:44,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:44,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:44,567 INFO L87 Difference]: Start difference. First operand 9377 states and 36016 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:44,628 INFO L93 Difference]: Finished difference Result 11157 states and 41886 transitions. [2021-03-11 16:00:44,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-03-11 16:00:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:44,668 INFO L225 Difference]: With dead ends: 11157 [2021-03-11 16:00:44,668 INFO L226 Difference]: Without dead ends: 10599 [2021-03-11 16:00:44,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10599 states. [2021-03-11 16:00:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10599 to 10243. [2021-03-11 16:00:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10243 states, 10242 states have (on average 3.7577621558289396) internal successors, (38487), 10242 states have internal predecessors, (38487), 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) [2021-03-11 16:00:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 38487 transitions. [2021-03-11 16:00:45,172 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 38487 transitions. Word has length 30 [2021-03-11 16:00:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:45,173 INFO L480 AbstractCegarLoop]: Abstraction has 10243 states and 38487 transitions. [2021-03-11 16:00:45,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 38487 transitions. [2021-03-11 16:00:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 16:00:45,200 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:45,200 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:45,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 16:00:45,200 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:45,201 INFO L82 PathProgramCache]: Analyzing trace with hash -335794205, now seen corresponding path program 1 times [2021-03-11 16:00:45,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:45,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217452432] [2021-03-11 16:00:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:45,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:45,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:45,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:45,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217452432] [2021-03-11 16:00:45,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:45,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:45,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017455165] [2021-03-11 16:00:45,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:45,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:45,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:45,249 INFO L87 Difference]: Start difference. First operand 10243 states and 38487 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:45,294 INFO L93 Difference]: Finished difference Result 9699 states and 34734 transitions. [2021-03-11 16:00:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-03-11 16:00:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:45,325 INFO L225 Difference]: With dead ends: 9699 [2021-03-11 16:00:45,325 INFO L226 Difference]: Without dead ends: 8000 [2021-03-11 16:00:45,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2021-03-11 16:00:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 8000. [2021-03-11 16:00:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8000 states, 7999 states have (on average 3.5906988373546693) internal successors, (28722), 7999 states have internal predecessors, (28722), 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) [2021-03-11 16:00:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 28722 transitions. [2021-03-11 16:00:45,738 INFO L78 Accepts]: Start accepts. Automaton has 8000 states and 28722 transitions. Word has length 30 [2021-03-11 16:00:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:45,738 INFO L480 AbstractCegarLoop]: Abstraction has 8000 states and 28722 transitions. [2021-03-11 16:00:45,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-03-11 16:00:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8000 states and 28722 transitions. [2021-03-11 16:00:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-11 16:00:45,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:45,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:45,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 16:00:45,759 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:45,760 INFO L82 PathProgramCache]: Analyzing trace with hash -956924172, now seen corresponding path program 1 times [2021-03-11 16:00:45,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:45,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239123967] [2021-03-11 16:00:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:45,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:45,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239123967] [2021-03-11 16:00:45,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:45,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:45,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434903340] [2021-03-11 16:00:45,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:45,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:45,800 INFO L87 Difference]: Start difference. First operand 8000 states and 28722 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-11 16:00:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:45,838 INFO L93 Difference]: Finished difference Result 6665 states and 23385 transitions. [2021-03-11 16:00:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-03-11 16:00:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:45,856 INFO L225 Difference]: With dead ends: 6665 [2021-03-11 16:00:45,856 INFO L226 Difference]: Without dead ends: 6665 [2021-03-11 16:00:45,857 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2021-03-11 16:00:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6665. [2021-03-11 16:00:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6664 states have (on average 3.5091536614645857) internal successors, (23385), 6664 states have internal predecessors, (23385), 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) [2021-03-11 16:00:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 23385 transitions. [2021-03-11 16:00:46,253 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 23385 transitions. Word has length 38 [2021-03-11 16:00:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:46,261 INFO L480 AbstractCegarLoop]: Abstraction has 6665 states and 23385 transitions. [2021-03-11 16:00:46,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-11 16:00:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 23385 transitions. [2021-03-11 16:00:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-11 16:00:46,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:46,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:46,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 16:00:46,279 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread1Err3INUSE_VIOLATION, thread4Err0INUSE_VIOLATION, thread4Thread1of1ForFork3Err8INUSE_VIOLATION, thread4Thread1of1ForFork3Err9INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err1INUSE_VIOLATION, thread4Err4INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:00:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash 872870200, now seen corresponding path program 2 times [2021-03-11 16:00:46,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:46,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966549798] [2021-03-11 16:00:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 16:00:46,295 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 16:00:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 16:00:46,302 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 16:00:46,337 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 16:00:46,337 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 16:00:46,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 16:00:46,374 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:00:46 BasicIcfg [2021-03-11 16:00:46,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 16:00:46,383 INFO L168 Benchmark]: Toolchain (without parser) took 7508.35 ms. Allocated memory was 255.9 MB in the beginning and 8.3 GB in the end (delta: 8.1 GB). Free memory was 236.5 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 390.8 MB. Max. memory is 16.0 GB. [2021-03-11 16:00:46,383 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:00:46,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 16:00:46,384 INFO L168 Benchmark]: Boogie Preprocessor took 21.24 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 16:00:46,384 INFO L168 Benchmark]: RCFGBuilder took 241.49 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 228.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.0 GB. [2021-03-11 16:00:46,385 INFO L168 Benchmark]: TraceAbstraction took 7214.03 ms. Allocated memory was 255.9 MB in the beginning and 8.3 GB in the end (delta: 8.1 GB). Free memory was 228.0 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 382.5 MB. Max. memory is 16.0 GB. [2021-03-11 16:00:46,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.24 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 241.49 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 228.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7214.03 ms. Allocated memory was 255.9 MB in the beginning and 8.3 GB in the end (delta: 8.1 GB). Free memory was 228.0 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 382.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 258.5ms, 84 PlacesBefore, 82 PlacesAfterwards, 73 TransitionsBefore, 71 TransitionsAfterwards, 1888 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 8304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5523, positive: 5355, positive conditional: 0, positive unconditional: 5355, negative: 168, negative conditional: 0, negative unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1314, positive: 1282, positive conditional: 0, positive unconditional: 1282, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1314, positive: 1270, positive conditional: 0, positive unconditional: 1270, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5523, positive: 4073, positive conditional: 0, positive unconditional: 4073, negative: 136, negative conditional: 0, negative unconditional: 136, unknown: 1314, unknown conditional: 0, unknown unconditional: 1314] , Statistics on independence cache: Total cache size (in pairs): 1314, Positive cache size: 1282, Positive conditional cache size: 0, Positive unconditional cache size: 1282, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32 - CounterExampleResult [Line: 121]: assertion can be violated assertion can be violated We found a FailurePath: [L115] 0 assume x_0 == x_8 && y_1 == y_9; VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L116] FORK 0 fork 1 thread1(); VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L60] 1 f1_2 := false; [L61] 1 f2_3 := false; VAL [f1_2=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L117] FORK 0 fork 4, 4, 4, 4 thread4(); VAL [f1_2=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L103] 2 f1_10 := false; [L104] 2 f2_11 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L106] FORK 2 fork 5, 5, 5, 5, 5 thread5(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L73] 3 temp_12 := x_8; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L74] 3 x_8 := temp_12 + 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L75] 3 f1_10 := true; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L107] FORK 2 fork 6, 6, 6, 6, 6, 6 thread6(); VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L88] 4 temp_14 := y_9; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L89] 4 y_9 := temp_14 + 1; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L90] 4 f2_11 := true; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L76] 3 assume f2_11; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L77] 3 temp_13 := y_9; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L78] 3 y_9 := temp_13 + 1; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L91] 4 assume f1_10; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L79] 3 f1_10 := false; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L92] 4 temp_15 := x_8; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=0, y_1=-1, y_9=1] [L93] 4 x_8 := temp_15 + 1; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L94] 4 f2_11 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L95] 4 assume !f1_10; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L80] 3 assume !f2_11; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L108] JOIN 3 join 5, 5, 5, 5, 5; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L109] JOIN 4 join 6, 6, 6, 6, 6, 6; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L63] FORK 1 fork 2, 2 thread2(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L64] FORK 1 fork 3, 3, 3 thread3(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L65] JOIN 5 join 2, 2; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L66] JOIN 6 join 3, 3, 3; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L118] JOIN 1 join 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L119] JOIN 2 join 4, 4, 4, 4; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L120] 0 assume !(x_0 == x_8 && y_1 == y_9); [L121] 0 assert false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6982.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 306.8ms, AutomataDifference: 1364.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1279.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 509 SDtfs, 202 SDslu, 249 SDs, 0 SdLazy, 37 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11888occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3579.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 1419 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.8ms SsaConstructionTime, 86.3ms SatisfiabilityAnalysisTime, 163.3ms InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 6/6 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...