/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:46:35,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:46:35,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:46:35,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:46:35,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:46:35,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:46:35,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:46:35,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:46:35,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:46:35,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:46:35,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:46:35,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-10 23:46:35,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:46:35,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:46:35,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:46:35,934 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-SemanticLbe.epf [2021-06-10 23:46:35,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:46:35,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:46:35,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:46:35,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:46:35,955 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:46:35,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:46:35,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:46:35,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:46:35,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:35,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:46:35,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:46:36,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:46:36,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:46:36,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:46:36,302 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 23:46:36,304 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 23:46:36,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl [2021-06-10 23:46:36,316 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl' [2021-06-10 23:46:36,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:46:36,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 23:46:36,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:36,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:46:36,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:46:36,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:36,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:46:36,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:46:36,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:46:36,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... [2021-06-10 23:46:36,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:46:36,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:46:36,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:46:36,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:46:36,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-10 23:46:36,460 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-10 23:46:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:46:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:46:36,462 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:46:36,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:46:36,607 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 23:46:36,608 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:36 BoogieIcfgContainer [2021-06-10 23:46:36,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:46:36,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:46:36,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:46:36,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:46:36,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:46:36" (1/2) ... [2021-06-10 23:46:36,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6652a5b7 and model type LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:46:36, skipping insertion in model container [2021-06-10 23:46:36,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:36" (2/2) ... [2021-06-10 23:46:36,627 INFO L111 eAbstractionObserver]: Analyzing ICFG LBE_bigexample_safe.bpl [2021-06-10 23:46:36,631 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:46:36,634 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2021-06-10 23:46:36,634 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:46:36,733 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-10 23:46:36,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-06-10 23:46:36,779 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:46:36,780 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:46:36,780 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:46:36,780 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:46:36,780 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:46:36,780 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:46:36,780 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:46:36,780 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:46:36,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 240 flow [2021-06-10 23:46:36,831 INFO L129 PetriNetUnfolder]: 17/98 cut-off events. [2021-06-10 23:46:36,831 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-10 23:46:36,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 98 events. 17/98 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 198 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2021-06-10 23:46:36,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 240 flow [2021-06-10 23:46:36,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 77 transitions, 202 flow [2021-06-10 23:46:36,842 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:46:36,852 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 202 flow [2021-06-10 23:46:36,855 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 202 flow [2021-06-10 23:46:36,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 202 flow [2021-06-10 23:46:36,874 INFO L129 PetriNetUnfolder]: 14/93 cut-off events. [2021-06-10 23:46:36,874 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-06-10 23:46:36,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 93 events. 14/93 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 207 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2021-06-10 23:46:36,878 INFO L151 LiptonReduction]: Number of co-enabled transitions 2320 [2021-06-10 23:46:37,503 INFO L163 LiptonReduction]: Checked pairs total: 1842 [2021-06-10 23:46:37,504 INFO L165 LiptonReduction]: Total number of compositions: 86 [2021-06-10 23:46:37,507 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 666 [2021-06-10 23:46:37,514 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-10 23:46:37,514 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:37,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:46:37,515 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-06-10 23:46:37,515 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr17ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr19ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr13ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr11ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr18ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr16ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr14ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:46:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:46:37,519 INFO L82 PathProgramCache]: Analyzing trace with hash 111808, now seen corresponding path program 1 times [2021-06-10 23:46:37,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:46:37,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011149367] [2021-06-10 23:46:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:46:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:46:37,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:37,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:46:37,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011149367] [2021-06-10 23:46:37,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:46:37,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 23:46:37,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972281959] [2021-06-10 23:46:37,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:46:37,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:46:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:46:37,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:46:37,623 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 172 [2021-06-10 23:46:37,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:46:37,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:46:37,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 172 [2021-06-10 23:46:37,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:46:37,692 INFO L129 PetriNetUnfolder]: 80/155 cut-off events. [2021-06-10 23:46:37,692 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-06-10 23:46:37,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 155 events. 80/155 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 599 event pairs, 49 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 249. Up to 81 conditions per place. [2021-06-10 23:46:37,695 INFO L132 encePairwiseOnDemand]: 143/172 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-06-10 23:46:37,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 104 flow [2021-06-10 23:46:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:46:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:46:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-06-10 23:46:37,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23449612403100775 [2021-06-10 23:46:37,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-06-10 23:46:37,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-06-10 23:46:37,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:46:37,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-06-10 23:46:37,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:46:37,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:46:37,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:46:37,720 INFO L185 Difference]: Start difference. First operand has 54 places, 50 transitions, 148 flow. Second operand 3 states and 121 transitions. [2021-06-10 23:46:37,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 104 flow [2021-06-10 23:46:37,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 22 transitions, 72 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-10 23:46:37,727 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-06-10 23:46:37,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-06-10 23:46:37,730 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, -34 predicate places. [2021-06-10 23:46:37,730 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2021-06-10 23:46:37,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:46:37,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:46:37,735 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:46:37 BasicIcfg [2021-06-10 23:46:37,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:46:37,737 INFO L168 Benchmark]: Toolchain (without parser) took 1385.97 ms. Allocated memory is still 352.3 MB. Free memory was 332.1 MB in the beginning and 215.1 MB in the end (delta: 117.0 MB). Peak memory consumption was 119.8 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:37,737 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:37,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.29 ms. Allocated memory is still 352.3 MB. Free memory was 332.0 MB in the beginning and 330.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:37,739 INFO L168 Benchmark]: Boogie Preprocessor took 14.39 ms. Allocated memory is still 352.3 MB. Free memory was 330.5 MB in the beginning and 329.6 MB in the end (delta: 854.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:37,740 INFO L168 Benchmark]: RCFGBuilder took 216.26 ms. Allocated memory is still 352.3 MB. Free memory was 329.6 MB in the beginning and 317.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:37,741 INFO L168 Benchmark]: TraceAbstraction took 1117.17 ms. Allocated memory is still 352.3 MB. Free memory was 317.3 MB in the beginning and 215.1 MB in the end (delta: 102.2 MB). Peak memory consumption was 105.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:37,747 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 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.29 ms. Allocated memory is still 352.3 MB. Free memory was 332.0 MB in the beginning and 330.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.39 ms. Allocated memory is still 352.3 MB. Free memory was 330.5 MB in the beginning and 329.6 MB in the end (delta: 854.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 216.26 ms. Allocated memory is still 352.3 MB. Free memory was 329.6 MB in the beginning and 317.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1117.17 ms. Allocated memory is still 352.3 MB. Free memory was 317.3 MB in the beginning and 215.1 MB in the end (delta: 102.2 MB). Peak memory consumption was 105.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 648.4ms, 81 PlacesBefore, 54 PlacesAfterwards, 77 TransitionsBefore, 50 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 7 FixpointIterations, 0 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 86 TotalNumberOfCompositions, 1842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1842, positive: 1842, positive conditional: 0, positive unconditional: 1842, 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: 856, positive: 856, positive conditional: 0, positive unconditional: 856, 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: 856, positive: 856, positive conditional: 0, positive unconditional: 856, 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: 856, positive: 856, positive conditional: 0, positive unconditional: 856, 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: 1842, positive: 986, positive conditional: 0, positive unconditional: 986, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 856, unknown conditional: 0, unknown unconditional: 856] , Statistics on independence cache: Total cache size (in pairs): 1720, Positive cache size: 1720, Positive conditional cache size: 0, Positive unconditional cache size: 1720, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 52]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 40]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 26]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 39]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 27]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 24]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 41]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 28]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 34]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 32]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 33]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 57 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 955.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 110.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 732.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 2.5ms SsaConstructionTime, 7.8ms SatisfiabilityAnalysisTime, 25.2ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...