/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:38:21,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:38:21,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:38:21,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:38:21,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:38:21,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:38:21,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:38:21,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:38:21,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:38:21,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:38:21,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:38:21,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:38:21,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:38:21,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:38:21,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:38:21,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:38:21,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:38:21,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:38:21,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:38:21,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:38:21,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:38:21,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:38:21,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:38:21,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:38:21,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:38:21,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:38:21,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:38:21,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:38:21,775 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-RepeatedVariableLbe.epf [2021-03-25 09:38:21,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:38:21,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:38:21,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:38:21,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:38:21,817 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:38:21,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:38:21,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:38:21,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:38:21,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:38:21,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:38:21,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:38:21,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:38:21,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:38:21,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:38:21,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:38:21,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:38:21,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:38:21,821 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:38:21,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:38:21,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:38:21,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:38:22,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:38:22,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:38:22,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:38:22,126 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:38:22,127 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:38:22,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl [2021-03-25 09:38:22,129 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl' [2021-03-25 09:38:22,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:38:22,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:38:22,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:38:22,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:38:22,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:38:22,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:38:22,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:38:22,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:38:22,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:38:22,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/1) ... [2021-03-25 09:38:22,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:38:22,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:38:22,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:38:22,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:38:22,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (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 [2021-03-25 09:38:22,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:38:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:38:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:38:22,282 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:38:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:38:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:38:22,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:38:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:38:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:38:22,284 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 09:38:22,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:38:22,456 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:38:22,458 INFO L202 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:38:22 BoogieIcfgContainer [2021-03-25 09:38:22,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:38:22,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:38:22,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:38:22,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:38:22,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:38:22" (1/2) ... [2021-03-25 09:38:22,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781b9e6e and model type misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:38:22, skipping insertion in model container [2021-03-25 09:38:22,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:38:22" (2/2) ... [2021-03-25 09:38:22,463 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled-atomic.wvr.bpl [2021-03-25 09:38:22,467 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:38:22,470 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:38:22,471 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:38:22,497 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 09:38:22,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 09:38:22,546 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:38:22,547 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:38:22,547 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:38:22,547 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:38:22,547 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:38:22,547 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:38:22,547 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:38:22,553 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:38:22,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 54 flow [2021-03-25 09:38:22,586 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 09:38:22,586 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:38:22,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-25 09:38:22,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 54 flow [2021-03-25 09:38:22,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-25 09:38:22,592 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:22,608 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 09:38:22,611 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 09:38:22,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 09:38:22,617 INFO L129 PetriNetUnfolder]: 2/15 cut-off events. [2021-03-25 09:38:22,617 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:38:22,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 2/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-25 09:38:22,619 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 09:38:22,709 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 09:38:22,710 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:38:22,711 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 120 [2021-03-25 09:38:22,719 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-25 09:38:22,719 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:38:22,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:38:22,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:38:22,720 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:38:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:38:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash -519619437, now seen corresponding path program 1 times [2021-03-25 09:38:22,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:38:22,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282066523] [2021-03-25 09:38:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:38:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:38:22,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:22,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:38:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:38:22,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282066523] [2021-03-25 09:38:22,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:38:22,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 09:38:22,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603338028] [2021-03-25 09:38:22,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:38:22,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:38:22,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:38:22,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:38:22,883 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 24 [2021-03-25 09:38:22,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-03-25 09:38:22,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:38:22,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 24 [2021-03-25 09:38:22,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:38:22,903 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-25 09:38:22,904 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:38:22,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 9 events. 2/9 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-25 09:38:22,905 INFO L132 encePairwiseOnDemand]: 22/24 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-25 09:38:22,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 36 flow [2021-03-25 09:38:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:38:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:38:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2021-03-25 09:38:22,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-25 09:38:22,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2021-03-25 09:38:22,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2021-03-25 09:38:22,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:38:22,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2021-03-25 09:38:22,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:22,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:22,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:22,936 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 3 states and 52 transitions. [2021-03-25 09:38:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 36 flow [2021-03-25 09:38:22,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 09:38:22,939 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-25 09:38:22,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=10, 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=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-03-25 09:38:22,941 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2021-03-25 09:38:22,941 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:22,941 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-25 09:38:22,941 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-25 09:38:22,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:38:22,941 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:38:22,942 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:38:22,942 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. [2021-03-25 09:38:22,942 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:38:22,942 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:38:22,942 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:38:22,942 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 09:38:22,943 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:38:22,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-03-25 09:38:22,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:38:22,951 INFO L202 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:38:22 BasicIcfg [2021-03-25 09:38:22,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:38:22,954 INFO L168 Benchmark]: Toolchain (without parser) took 774.44 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 200.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.0 GB. [2021-03-25 09:38:22,954 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.43 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:38:22,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:38:22,956 INFO L168 Benchmark]: Boogie Preprocessor took 13.24 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 980.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:38:22,957 INFO L168 Benchmark]: RCFGBuilder took 241.43 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 235.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.0 GB. [2021-03-25 09:38:22,958 INFO L168 Benchmark]: TraceAbstraction took 492.46 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 200.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-03-25 09:38:22,964 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 0.43 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.24 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 980.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 241.43 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 235.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 492.46 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 200.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 98.6ms, 20 PlacesBefore, 15 PlacesAfterwards, 15 TransitionsBefore, 10 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, 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: 16, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 20, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 16, unknown conditional: 0, unknown unconditional: 16] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 0.9ms, 12 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 49]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 405.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 66.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 162.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6ms 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=32occurred 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: 4.2ms SsaConstructionTime, 16.4ms SatisfiabilityAnalysisTime, 41.5ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...