/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:07:02,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:07:02,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:07:02,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:07:02,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:07:02,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:07:02,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:07:02,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:07:02,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:07:02,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:07:02,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:07:02,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:07:02,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:07:02,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:07:02,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:07:02,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:07:02,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:07:02,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:07:02,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:07:02,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:07:02,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:07:02,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:07:02,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:07:02,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:07:02,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 05:07:02,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:07:02,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:07:02,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:07:02,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 05:07:02,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:07:02,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:07:02,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:07:02,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:07:02,356 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:07:02,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:07:02,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:07:02,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:07:02,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:07:02,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:07:02,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:07:02,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:07:02,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:07:02,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:07:02,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:07:02,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:07:02,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:07:02,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:07:02,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:07:02,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:07:02,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:07:02,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:07:02,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:07:02,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:07:02,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:07:02,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:07:02,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:07:02,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:07:02,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:07:02,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:07:02,364 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:07:02,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:07:02,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:07:02,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:07:02,894 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:07:02,895 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:07:02,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl [2021-04-29 05:07:02,896 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl' [2021-04-29 05:07:02,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:07:03,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:07:03,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:03,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:07:03,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:07:03,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:03,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:07:03,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:07:03,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:07:03,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/1) ... [2021-04-29 05:07:03,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:07:03,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:07:03,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:07:03,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:07:03,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (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 [2021-04-29 05:07:03,240 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:07:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:07:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:07:03,244 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:07:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:07:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:07:03,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:07:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:07:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:07:03,247 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 05:07:03,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:07:03,568 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:07:03,571 INFO L202 PluginConnector]: Adding new model collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:03 BoogieIcfgContainer [2021-04-29 05:07:03,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:07:03,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:07:03,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:07:03,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:07:03,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:02" (1/2) ... [2021-04-29 05:07:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb7620a and model type collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:07:03, skipping insertion in model container [2021-04-29 05:07:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:03" (2/2) ... [2021-04-29 05:07:03,586 INFO L111 eAbstractionObserver]: Analyzing ICFG collitem-symm.wvr.bpl [2021-04-29 05:07:03,595 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:07:03,604 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:07:03,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:07:03,659 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-29 05:07:03,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 05:07:03,733 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:07:03,734 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:07:03,734 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:07:03,734 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:07:03,734 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:07:03,734 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:07:03,735 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:07:03,735 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:07:03,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2021-04-29 05:07:03,829 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 05:07:03,830 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:07:03,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 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. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:03,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 44 flow [2021-04-29 05:07:03,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 10 transitions, 32 flow [2021-04-29 05:07:03,847 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:03,876 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 10 transitions, 32 flow [2021-04-29 05:07:03,882 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 10 transitions, 32 flow [2021-04-29 05:07:03,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 10 transitions, 32 flow [2021-04-29 05:07:03,891 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:07:03,891 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:07:03,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:03,893 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 05:07:04,058 INFO L158 LiptonReduction]: Checked pairs total: 6 [2021-04-29 05:07:04,059 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 05:07:04,069 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 225 [2021-04-29 05:07:04,115 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-04-29 05:07:04,116 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:07:04,121 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:04,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:04,123 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 750734955, now seen corresponding path program 1 times [2021-04-29 05:07:04,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:04,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235674387] [2021-04-29 05:07:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:04,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:04,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:05,120 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 481 DAG size of output: 204 [2021-04-29 05:07:05,128 INFO L142 QuantifierPusher]: treesize reduction 10259, result has 9.6 percent of original size [2021-04-29 05:07:05,173 INFO L147 QuantifierPusher]: treesize reduction 110, result has 89.9 percent of original size 979 [2021-04-29 05:07:05,697 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 47 [2021-04-29 05:07:05,709 INFO L142 QuantifierPusher]: treesize reduction 247, result has 26.3 percent of original size [2021-04-29 05:07:05,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-29 05:07:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:05,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235674387] [2021-04-29 05:07:05,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:05,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:07:05,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320261446] [2021-04-29 05:07:05,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 05:07:05,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 05:07:05,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 05:07:05,842 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-04-29 05:07:05,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:05,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:05,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-04-29 05:07:05,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:06,014 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-29 05:07:06,059 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-04-29 05:07:06,059 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-29 05:07:06,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 21 events. 0/21 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 54 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-29 05:07:06,061 INFO L132 encePairwiseOnDemand]: 11/17 looper letters, 2 selfloop transitions, 1 changer transitions 5/12 dead transitions. [2021-04-29 05:07:06,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 52 flow [2021-04-29 05:07:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 05:07:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 05:07:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2021-04-29 05:07:06,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2021-04-29 05:07:06,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 50 transitions. [2021-04-29 05:07:06,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 50 transitions. [2021-04-29 05:07:06,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:06,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 50 transitions. [2021-04-29 05:07:06,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-04-29 05:07:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 05:07:06,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 05:07:06,101 INFO L185 Difference]: Start difference. First operand has 17 places, 10 transitions, 32 flow. Second operand 4 states and 50 transitions. [2021-04-29 05:07:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 52 flow [2021-04-29 05:07:06,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 44 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-29 05:07:06,109 INFO L241 Difference]: Finished difference. Result has 18 places, 7 transitions, 25 flow [2021-04-29 05:07:06,111 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=25, PETRI_PLACES=18, PETRI_TRANSITIONS=7} [2021-04-29 05:07:06,113 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2021-04-29 05:07:06,113 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:06,113 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 7 transitions, 25 flow [2021-04-29 05:07:06,114 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 7 transitions, 25 flow [2021-04-29 05:07:06,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 7 transitions, 25 flow [2021-04-29 05:07:06,119 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-04-29 05:07:06,120 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:07:06,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 8 events. 0/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 4 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:06,120 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 05:07:06,121 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:06,122 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:06,122 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:07:06,124 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 25 flow [2021-04-29 05:07:06,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:06,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:06,125 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:06,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:07:06,126 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash 862451205, now seen corresponding path program 2 times [2021-04-29 05:07:06,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:06,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827591904] [2021-04-29 05:07:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:06,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:06,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:06,628 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 486 DAG size of output: 212 [2021-04-29 05:07:06,631 INFO L142 QuantifierPusher]: treesize reduction 8445, result has 14.6 percent of original size [2021-04-29 05:07:06,667 INFO L147 QuantifierPusher]: treesize reduction 479, result has 66.7 percent of original size 961 [2021-04-29 05:07:07,391 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 45 [2021-04-29 05:07:07,399 INFO L142 QuantifierPusher]: treesize reduction 257, result has 28.8 percent of original size [2021-04-29 05:07:07,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-29 05:07:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:07,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827591904] [2021-04-29 05:07:07,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:07,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:07:07,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449424948] [2021-04-29 05:07:07,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 05:07:07,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 05:07:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 05:07:07,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-04-29 05:07:07,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 25 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:07,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:07,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-04-29 05:07:07,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:07,652 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-29 05:07:07,655 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-04-29 05:07:07,656 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 05:07:07,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:07,657 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-04-29 05:07:07,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-04-29 05:07:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 05:07:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 05:07:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-04-29 05:07:07,659 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-04-29 05:07:07,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-04-29 05:07:07,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-04-29 05:07:07,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:07,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-04-29 05:07:07,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-04-29 05:07:07,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 05:07:07,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 05:07:07,663 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 25 flow. Second operand 4 states and 44 transitions. [2021-04-29 05:07:07,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-04-29 05:07:07,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 05:07:07,665 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-04-29 05:07:07,665 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-04-29 05:07:07,666 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2021-04-29 05:07:07,666 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:07,667 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 05:07:07,667 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 05:07:07,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:07,668 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:07:07,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:07:07,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 05:07:07,669 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:07:07,669 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:07,669 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:07,669 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-29 05:07:07,671 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:07,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:07,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:07:07,677 INFO L202 PluginConnector]: Adding new model collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:07:07 BasicIcfg [2021-04-29 05:07:07,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:07:07,680 INFO L168 Benchmark]: Toolchain (without parser) took 4740.99 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 268.7 MB in the beginning and 200.8 MB in the end (delta: 67.9 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:07,681 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 269.7 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:07,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 302.0 MB. Free memory was 284.1 MB in the beginning and 282.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:07,683 INFO L168 Benchmark]: Boogie Preprocessor took 24.18 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 281.7 MB in the end (delta: 875.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:07,683 INFO L168 Benchmark]: RCFGBuilder took 492.11 ms. Allocated memory is still 302.0 MB. Free memory was 281.7 MB in the beginning and 274.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:07,684 INFO L168 Benchmark]: TraceAbstraction took 4103.23 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 274.4 MB in the beginning and 200.8 MB in the end (delta: 73.6 MB). Peak memory consumption was 175.8 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:07,688 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 0.23 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 269.7 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 302.0 MB. Free memory was 284.1 MB in the beginning and 282.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.18 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 281.7 MB in the end (delta: 875.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 492.11 ms. Allocated memory is still 302.0 MB. Free memory was 281.7 MB in the beginning and 274.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4103.23 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 274.4 MB in the beginning and 200.8 MB in the end (delta: 73.6 MB). Peak memory consumption was 175.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 179.7ms, 17 PlacesBefore, 17 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 6, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7ms, 18 PlacesBefore, 14 PlacesAfterwards, 7 TransitionsBefore, 7 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 6, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8ms, 15 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 6, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 29.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3948.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 433.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 355.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1662.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.2ms SsaConstructionTime, 250.8ms SatisfiabilityAnalysisTime, 2620.9ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 522 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...