/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/sre-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:27:21,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:27:21,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:27:21,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:27:21,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:27:21,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:27:21,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:27:21,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:27:21,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:27:21,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:27:21,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:27:21,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:27:21,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:27:21,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:27:21,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:27:21,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:27:21,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:27:21,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:27:21,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:27:21,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:27:21,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:27:21,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:27:21,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:27:21,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:27:21,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 05:27:21,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:27:21,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:27:21,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:27:21,868 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 05:27:21,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:27:21,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:27:21,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:27:21,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:27:21,904 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:27:21,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:27:21,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:27:21,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:27:21,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:27:21,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:27:21,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:27:21,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:27:21,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:27:21,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:27:21,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:27:21,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:27:21,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:27:21,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:27:21,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:27:21,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:27:21,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:27:21,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:27:21,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:27:21,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:27:21,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:27:21,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:27:21,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:27:21,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:27:21,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:27:21,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:27:21,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:27:22,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:27:22,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:27:22,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:27:22,349 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:27:22,350 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:27:22,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl [2021-04-29 05:27:22,352 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl' [2021-04-29 05:27:22,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:27:22,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:27:22,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:27:22,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:27:22,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:27:22,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:27:22,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:27:22,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:27:22,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:27:22,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/1) ... [2021-04-29 05:27:22,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:27:22,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:27:22,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:27:22,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:27:22,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (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 05:27:22,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:27:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:27:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:27:22,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:27:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:27:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:27:22,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:27:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:27:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:27:22,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-29 05:27:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-29 05:27:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-29 05:27:22,633 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 05:27:22,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:27:22,815 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:27:22,817 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:27:22 BoogieIcfgContainer [2021-04-29 05:27:22,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:27:22,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:27:22,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:27:22,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:27:22,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:27:22" (1/2) ... [2021-04-29 05:27:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f11a8 and model type sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:27:22, skipping insertion in model container [2021-04-29 05:27:22,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:27:22" (2/2) ... [2021-04-29 05:27:22,826 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.bpl [2021-04-29 05:27:22,833 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:27:22,837 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:27:22,839 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:27:22,884 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-04-29 05:27:22,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 05:27:22,940 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:27:22,940 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:27:22,940 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:27:22,941 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:27:22,941 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:27:22,941 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:27:22,941 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:27:22,942 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:27:22,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:27:22,991 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:27:22,991 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:27:22,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:27:22,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:27:23,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-04-29 05:27:23,002 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:27:23,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:27:23,029 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:27:23,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-04-29 05:27:23,042 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 05:27:23,043 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:27:23,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 0/14 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:27:23,046 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 05:27:23,175 INFO L158 LiptonReduction]: Checked pairs total: 18 [2021-04-29 05:27:23,176 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 05:27:23,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-04-29 05:27:23,197 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 05:27:23,197 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:27:23,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:27:23,198 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:27:23,199 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:27:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:27:23,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1918454439, now seen corresponding path program 1 times [2021-04-29 05:27:23,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:27:23,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638533001] [2021-04-29 05:27:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:27:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:27:23,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:27:23,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:27:23,484 INFO L142 QuantifierPusher]: treesize reduction 5, result has 54.5 percent of original size [2021-04-29 05:27:23,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-04-29 05:27:23,515 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-04-29 05:27:23,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:27:23,538 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 05:27:23,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638533001] [2021-04-29 05:27:23,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:27:23,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:27:23,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985052446] [2021-04-29 05:27:23,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 05:27:23,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:27:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 05:27:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 05:27:23,571 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 23 [2021-04-29 05:27:23,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 05:27:23,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:27:23,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 23 [2021-04-29 05:27:23,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:27:23,648 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-04-29 05:27:23,648 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-04-29 05:27:23,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 26 events. 0/26 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 83 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-29 05:27:23,650 INFO L132 encePairwiseOnDemand]: 17/23 looper letters, 2 selfloop transitions, 1 changer transitions 6/16 dead transitions. [2021-04-29 05:27:23,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 66 flow [2021-04-29 05:27:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 05:27:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 05:27:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2021-04-29 05:27:23,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2021-04-29 05:27:23,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2021-04-29 05:27:23,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2021-04-29 05:27:23,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:27:23,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2021-04-29 05:27:23,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 05:27:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 05:27:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 05:27:23,692 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 4 states and 74 transitions. [2021-04-29 05:27:23,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 66 flow [2021-04-29 05:27:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 54 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-04-29 05:27:23,707 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 33 flow [2021-04-29 05:27:23,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2021-04-29 05:27:23,712 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2021-04-29 05:27:23,712 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:27:23,712 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 33 flow [2021-04-29 05:27:23,714 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 33 flow [2021-04-29 05:27:23,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 10 transitions, 33 flow [2021-04-29 05:27:23,732 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 05:27:23,732 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:27:23,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 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. [2021-04-29 05:27:23,733 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:27:23,735 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:27:23,736 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:27:23,736 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-04-29 05:27:23,741 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 33 flow [2021-04-29 05:27:23,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 05:27:23,741 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:27:23,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:27:23,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:27:23,742 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:27:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:27:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -730943987, now seen corresponding path program 2 times [2021-04-29 05:27:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:27:23,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340646229] [2021-04-29 05:27:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:27:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:27:23,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:27:23,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:27:23,872 INFO L142 QuantifierPusher]: treesize reduction 100, result has 24.2 percent of original size [2021-04-29 05:27:23,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-29 05:27:23,934 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-04-29 05:27:23,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:27:23,951 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 05:27:23,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340646229] [2021-04-29 05:27:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:27:23,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:27:23,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567839882] [2021-04-29 05:27:23,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 05:27:23,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:27:23,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 05:27:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 05:27:23,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:27:23,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 05:27:23,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:27:23,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:27:23,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:27:24,019 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2021-04-29 05:27:24,020 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-04-29 05:27:24,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 20 events. 3/20 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 39. Up to 5 conditions per place. [2021-04-29 05:27:24,022 INFO L132 encePairwiseOnDemand]: 20/23 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-04-29 05:27:24,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 50 flow [2021-04-29 05:27:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 05:27:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 05:27:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2021-04-29 05:27:24,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2021-04-29 05:27:24,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 63 transitions. [2021-04-29 05:27:24,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 63 transitions. [2021-04-29 05:27:24,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:27:24,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 63 transitions. [2021-04-29 05:27:24,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:27:24,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 05:27:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 05:27:24,027 INFO L185 Difference]: Start difference. First operand has 18 places, 10 transitions, 33 flow. Second operand 4 states and 63 transitions. [2021-04-29 05:27:24,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 50 flow [2021-04-29 05:27:24,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 05:27:24,029 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-04-29 05:27:24,029 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-04-29 05:27:24,030 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -5 predicate places. [2021-04-29 05:27:24,030 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:27:24,030 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 0 transitions, 0 flow [2021-04-29 05:27:24,031 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 0 transitions, 0 flow [2021-04-29 05:27:24,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:27:24,031 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:27:24,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:27:24,031 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 05:27:24,032 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:27:24,032 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:27:24,032 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:27:24,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 05:27:24,034 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:27:24,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 05:27:24,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:27:24,038 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:27:24 BasicIcfg [2021-04-29 05:27:24,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:27:24,040 INFO L168 Benchmark]: Toolchain (without parser) took 1638.36 ms. Allocated memory is still 302.0 MB. Free memory was 270.5 MB in the beginning and 261.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. [2021-04-29 05:27:24,041 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory was 271.6 MB in the beginning and 271.4 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:27:24,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 283.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:27:24,043 INFO L168 Benchmark]: Boogie Preprocessor took 17.63 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.7 MB in the end (delta: 733.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:27:24,043 INFO L168 Benchmark]: RCFGBuilder took 292.06 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 279.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-04-29 05:27:24,044 INFO L168 Benchmark]: TraceAbstraction took 1220.24 ms. Allocated memory is still 302.0 MB. Free memory was 279.3 MB in the beginning and 261.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.0 GB. [2021-04-29 05:27:24,047 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 0.77 ms. Allocated memory is still 302.0 MB. Free memory was 271.6 MB in the beginning and 271.4 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 283.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.63 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.7 MB in the end (delta: 733.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 292.06 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 279.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1220.24 ms. Allocated memory is still 302.0 MB. Free memory was 279.3 MB in the beginning and 261.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 146.5ms, 24 PlacesBefore, 24 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, 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: 21.5ms, 23 PlacesBefore, 18 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 14 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): 18, Positive cache size: 18, Positive conditional cache size: 18, 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: 1.5ms, 19 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): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 44]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1101.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 221.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 246.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 13.3ms SsaConstructionTime, 61.5ms SatisfiabilityAnalysisTime, 345.9ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 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...