/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/test/semi1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 18:21:45,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 18:21:45,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 18:21:45,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 18:21:45,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 18:21:45,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 18:21:45,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 18:21:45,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 18:21:45,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 18:21:45,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 18:21:45,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 18:21:45,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 18:21:45,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 18:21:45,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 18:21:45,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 18:21:45,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 18:21:45,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 18:21:45,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 18:21:45,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 18:21:45,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 18:21:45,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 18:21:45,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 18:21:45,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 18:21:45,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 18:21:45,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 18:21:45,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 18:21:45,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 18:21:45,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 18:21:45,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 18:21:45,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 18:21:45,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 18:21:45,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 18:21:45,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 18:21:45,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 18:21:45,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 18:21:45,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 18:21:45,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 18:21:45,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 18:21:45,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 18:21:45,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 18:21:45,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 18:21:45,919 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 18:21:45,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 18:21:45,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 18:21:45,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 18:21:45,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 18:21:45,948 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 18:21:45,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 18:21:45,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 18:21:45,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 18:21:45,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 18:21:45,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 18:21:45,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 18:21:45,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 18:21:45,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 18:21:45,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 18:21:45,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 18:21:46,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 18:21:46,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 18:21:46,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 18:21:46,190 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 18:21:46,190 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 18:21:46,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl [2021-03-11 18:21:46,191 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/semi1.wvr.bpl' [2021-03-11 18:21:46,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 18:21:46,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 18:21:46,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 18:21:46,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 18:21:46,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 18:21:46,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 18:21:46,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 18:21:46,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 18:21:46,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 18:21:46,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/1) ... [2021-03-11 18:21:46,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 18:21:46,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 18:21:46,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 18:21:46,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 18:21:46,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (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 18:21:46,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 18:21:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 18:21:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 18:21:46,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 18:21:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 18:21:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 18:21:46,313 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 18:21:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 18:21:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 18:21:46,314 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 18:21:46,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 18:21:46,433 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 18:21:46,435 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:21:46 BoogieIcfgContainer [2021-03-11 18:21:46,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 18:21:46,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 18:21:46,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 18:21:46,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 18:21:46,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:21:46" (1/2) ... [2021-03-11 18:21:46,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1529e and model type semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:21:46, skipping insertion in model container [2021-03-11 18:21:46,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:21:46" (2/2) ... [2021-03-11 18:21:46,440 INFO L111 eAbstractionObserver]: Analyzing ICFG semi1.wvr.bpl [2021-03-11 18:21:46,445 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 18:21:46,445 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 18:21:46,451 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 18:21:46,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 18:21:46,488 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 18:21:46,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 18:21:46,525 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 18:21:46,526 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 18:21:46,526 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 18:21:46,526 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 18:21:46,526 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 18:21:46,526 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 18:21:46,526 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 18:21:46,526 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 18:21:46,538 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 18:21:46,545 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 15 transitions, 46 flow [2021-03-11 18:21:46,548 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 15 transitions, 46 flow [2021-03-11 18:21:46,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 15 transitions, 46 flow [2021-03-11 18:21:46,563 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-11 18:21:46,563 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 18:21:46,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 0/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 18:21:46,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-11 18:21:46,638 INFO L131 LiptonReduction]: Checked pairs total: 22 [2021-03-11 18:21:46,638 INFO L133 LiptonReduction]: Total number of compositions: 5 [2021-03-11 18:21:46,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 11 transitions, 38 flow [2021-03-11 18:21:46,648 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 18:21:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 18:21:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 18:21:46,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 18:21:46,652 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:21:46,652 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 18:21:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:21:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1049764433, now seen corresponding path program 1 times [2021-03-11 18:21:46,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:21:46,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864468811] [2021-03-11 18:21:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:21:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:21:46,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:21:46,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 18:21:46,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:21:46,777 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 18:21:46,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864468811] [2021-03-11 18:21:46,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:21:46,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 18:21:46,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056197865] [2021-03-11 18:21:46,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 18:21:46,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:21:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 18:21:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 18:21:46,789 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 18:21:46,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 18:21:46,816 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-03-11 18:21:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 18:21:46,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-03-11 18:21:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 18:21:46,821 INFO L225 Difference]: With dead ends: 15 [2021-03-11 18:21:46,821 INFO L226 Difference]: Without dead ends: 11 [2021-03-11 18:21:46,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 18:21:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-03-11 18:21:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-03-11 18:21:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 18:21:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-03-11 18:21:46,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-03-11 18:21:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 18:21:46,838 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-03-11 18:21:46,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 18:21:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-03-11 18:21:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 18:21:46,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 18:21:46,838 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:21:46,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 18:21:46,839 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 18:21:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:21:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1047140903, now seen corresponding path program 2 times [2021-03-11 18:21:46,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:21:46,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388260765] [2021-03-11 18:21:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:21:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:21:46,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:21:46,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 18:21:46,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:21:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:21:46,861 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 18:21:46,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388260765] [2021-03-11 18:21:46,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:21:46,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 18:21:46,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854808545] [2021-03-11 18:21:46,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 18:21:46,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:21:46,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 18:21:46,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 18:21:46,864 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 18:21:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 18:21:46,869 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-03-11 18:21:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 18:21:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-03-11 18:21:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 18:21:46,869 INFO L225 Difference]: With dead ends: 10 [2021-03-11 18:21:46,869 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 18:21:46,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 18:21:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 18:21:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 18:21:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:21:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 18:21:46,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-03-11 18:21:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 18:21:46,870 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 18:21:46,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 18:21:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 18:21:46,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 18:21:46,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 18:21:46,873 INFO L202 PluginConnector]: Adding new model semi1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:21:46 BasicIcfg [2021-03-11 18:21:46,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 18:21:46,874 INFO L168 Benchmark]: Toolchain (without parser) took 651.89 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 201.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.0 GB. [2021-03-11 18:21:46,874 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:21:46,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.55 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:21:46,875 INFO L168 Benchmark]: Boogie Preprocessor took 9.68 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.8 MB in the end (delta: 728.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:21:46,875 INFO L168 Benchmark]: RCFGBuilder took 181.07 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 239.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 18:21:46,876 INFO L168 Benchmark]: TraceAbstraction took 436.79 ms. Allocated memory is still 255.9 MB. Free memory was 239.8 MB in the beginning and 201.0 MB in the end (delta: 38.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-03-11 18:21:46,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.55 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.68 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.8 MB in the end (delta: 728.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 181.07 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 239.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 436.79 ms. Allocated memory is still 255.9 MB. Free memory was 239.8 MB in the beginning and 201.0 MB in the end (delta: 38.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 90.6ms, 22 PlacesBefore, 18 PlacesAfterwards, 15 TransitionsBefore, 11 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 21, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 13, unknown conditional: 0, unknown unconditional: 13] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 347.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 3.8ms, AutomataDifference: 47.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 121.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 2 SDslu, 14 SDs, 0 SdLazy, 16 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.8ms SsaConstructionTime, 15.2ms SatisfiabilityAnalysisTime, 86.6ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...