/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/chl/container-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:04:48,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:04:48,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:04:49,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:04:49,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:04:49,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:04:49,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:04:49,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:04:49,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:04:49,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:04:49,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:04:49,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:04:49,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:04:49,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:04:49,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:04:49,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:04:49,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:04:49,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:04:49,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:04:49,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:04:49,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:04:49,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:04:49,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:04:49,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:04:49,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:04:49,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 09:04:49,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 09:04:49,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 09:04:49,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 09:04:49,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 09:04:49,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 09:04:49,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 09:04:49,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 09:04:49,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:04:49,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:04:49,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:04:49,048 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 09:04:49,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:04:49,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:04:49,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:04:49,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:04:49,079 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:04:49,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:04:49,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:04:49,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:04:49,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:04:49,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:04:49,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:04:49,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:04:49,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:04:49,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:04:49,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:04:49,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:04:49,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:04:49,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:04:49,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:04:49,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:04:49,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:04:49,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:04:49,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:04:49,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:04:49,386 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:04:49,387 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:04:49,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl [2021-03-25 09:04:49,388 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl' [2021-03-25 09:04:49,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:04:49,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:04:49,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:04:49,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:04:49,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:04:49,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:04:49,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:04:49,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:04:49,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:04:49,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/1) ... [2021-03-25 09:04:49,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:04:49,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:04:49,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:04:49,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:04:49,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (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 09:04:49,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:04:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:04:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:04:49,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:04:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:04:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:04:49,534 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:04:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:04:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:04:49,534 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:04:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:04:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:04:49,535 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 09:04:49,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:04:49,771 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:04:49,772 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:04:49 BoogieIcfgContainer [2021-03-25 09:04:49,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:04:49,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:04:49,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:04:49,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:04:49,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:04:49" (1/2) ... [2021-03-25 09:04:49,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323b44bb and model type container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:04:49, skipping insertion in model container [2021-03-25 09:04:49,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:04:49" (2/2) ... [2021-03-25 09:04:49,778 INFO L111 eAbstractionObserver]: Analyzing ICFG container-subst.wvr.bpl [2021-03-25 09:04:49,782 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:04:49,786 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:04:49,789 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:04:49,847 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 09:04:49,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 09:04:49,887 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:04:49,887 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:04:49,887 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:04:49,887 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:04:49,887 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:04:49,888 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:04:49,888 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:04:49,890 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:04:49,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 09:04:49,926 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 09:04:49,926 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:04:49,927 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 14 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. [2021-03-25 09:04:49,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 09:04:49,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-03-25 09:04:49,931 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:49,944 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 09:04:49,947 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 09:04:49,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-03-25 09:04:49,960 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 09:04:49,960 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:04:49,960 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 14 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. [2021-03-25 09:04:49,962 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 09:04:50,150 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 09:04:50,151 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 09:04:50,152 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 222 [2021-03-25 09:04:50,164 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-25 09:04:50,164 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:04:50,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:50,165 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:50,165 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1809114803, now seen corresponding path program 1 times [2021-03-25 09:04:50,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:50,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273120492] [2021-03-25 09:04:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:50,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:50,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:50,889 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 195 [2021-03-25 09:04:50,893 INFO L142 QuantifierPusher]: treesize reduction 12970, result has 14.6 percent of original size [2021-03-25 09:04:50,919 INFO L147 QuantifierPusher]: treesize reduction 949, result has 57.2 percent of original size 1267 [2021-03-25 09:04:51,341 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 49 [2021-03-25 09:04:51,378 INFO L142 QuantifierPusher]: treesize reduction 2822, result has 22.2 percent of original size [2021-03-25 09:04:51,391 INFO L147 QuantifierPusher]: treesize reduction 80, result has 90.0 percent of original size 724 [2021-03-25 09:04:51,835 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-25 09:04:51,839 INFO L142 QuantifierPusher]: treesize reduction 83, result has 43.5 percent of original size [2021-03-25 09:04:51,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-25 09:04:51,905 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 09:04:51,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273120492] [2021-03-25 09:04:51,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:51,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:51,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971818650] [2021-03-25 09:04:51,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:51,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:51,934 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:51,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 10 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:51,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:51,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:51,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:52,298 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-03-25 09:04:52,708 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 121 [2021-03-25 09:04:52,728 INFO L129 PetriNetUnfolder]: 3/29 cut-off events. [2021-03-25 09:04:52,728 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-25 09:04:52,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 29 events. 3/29 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 1 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 42. Up to 7 conditions per place. [2021-03-25 09:04:52,731 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-03-25 09:04:52,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 62 flow [2021-03-25 09:04:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:04:52,748 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:04:52,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:04:52,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:04:52,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:52,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:04:52,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 09:04:52,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:52,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:52,760 INFO L185 Difference]: Start difference. First operand has 20 places, 10 transitions, 38 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:04:52,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 62 flow [2021-03-25 09:04:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 09:04:52,780 INFO L241 Difference]: Finished difference. Result has 21 places, 11 transitions, 41 flow [2021-03-25 09:04:52,781 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=41, PETRI_PLACES=21, PETRI_TRANSITIONS=11} [2021-03-25 09:04:52,782 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2021-03-25 09:04:52,782 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:52,782 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 09:04:52,782 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 09:04:52,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-03-25 09:04:52,789 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 09:04:52,789 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 09:04:52,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 19 events. 0/19 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:04:52,790 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 09:04:52,792 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:52,792 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:52,793 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 09:04:52,794 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-03-25 09:04:52,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:52,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:52,796 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:52,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:04:52,796 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:52,798 INFO L82 PathProgramCache]: Analyzing trace with hash 840283623, now seen corresponding path program 2 times [2021-03-25 09:04:52,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:52,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229436263] [2021-03-25 09:04:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:52,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:52,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:53,138 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 194 [2021-03-25 09:04:53,139 INFO L142 QuantifierPusher]: treesize reduction 17330, result has 24.3 percent of original size [2021-03-25 09:04:53,189 INFO L147 QuantifierPusher]: treesize reduction 3202, result has 42.4 percent of original size 2354 [2021-03-25 09:04:53,652 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 42 [2021-03-25 09:04:53,731 INFO L142 QuantifierPusher]: treesize reduction 16617, result has 6.4 percent of original size [2021-03-25 09:04:53,739 INFO L147 QuantifierPusher]: treesize reduction 114, result has 90.0 percent of original size 1029 [2021-03-25 09:04:54,060 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-03-25 09:04:54,069 INFO L142 QuantifierPusher]: treesize reduction 558, result has 27.2 percent of original size [2021-03-25 09:04:54,077 INFO L147 QuantifierPusher]: treesize reduction 134, result has 35.6 percent of original size 74 [2021-03-25 09:04:54,165 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 09:04:54,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229436263] [2021-03-25 09:04:54,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:54,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:54,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326692530] [2021-03-25 09:04:54,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:54,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:54,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:54,177 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:54,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 41 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:54,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:54,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:54,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:54,328 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-25 09:04:54,487 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-03-25 09:04:54,508 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-03-25 09:04:54,508 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-03-25 09:04:54,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 2/29 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2021-03-25 09:04:54,509 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-03-25 09:04:54,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-03-25 09:04:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:04:54,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:04:54,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:04:54,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:04:54,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:54,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:04:54,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 09:04:54,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:54,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:54,513 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:04:54,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-03-25 09:04:54,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 78 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 09:04:54,514 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-03-25 09:04:54,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-03-25 09:04:54,515 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2021-03-25 09:04:54,515 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:54,515 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 09:04:54,515 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 09:04:54,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-03-25 09:04:54,519 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 09:04:54,519 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-03-25 09:04:54,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 24 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 09:04:54,520 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 09:04:54,520 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:54,521 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:54,521 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 09:04:54,521 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-03-25 09:04:54,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:54,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:54,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:54,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:04:54,522 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash -31273989, now seen corresponding path program 3 times [2021-03-25 09:04:54,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:54,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353545805] [2021-03-25 09:04:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:54,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:54,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:54,660 INFO L142 QuantifierPusher]: treesize reduction 1571, result has 13.7 percent of original size [2021-03-25 09:04:54,662 INFO L147 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size 244 [2021-03-25 09:04:54,775 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-03-25 09:04:54,793 INFO L142 QuantifierPusher]: treesize reduction 2497, result has 20.8 percent of original size [2021-03-25 09:04:54,797 INFO L147 QuantifierPusher]: treesize reduction 84, result has 87.2 percent of original size 572 [2021-03-25 09:04:55,146 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-03-25 09:04:55,157 INFO L142 QuantifierPusher]: treesize reduction 226, result has 27.8 percent of original size [2021-03-25 09:04:55,159 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size 83 [2021-03-25 09:04:55,245 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 09:04:55,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353545805] [2021-03-25 09:04:55,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:55,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:55,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676235256] [2021-03-25 09:04:55,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:55,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:55,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:55,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:55,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:55,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:55,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:55,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:55,416 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-03-25 09:04:55,599 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-25 09:04:55,610 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-25 09:04:55,610 INFO L130 PetriNetUnfolder]: For 43/46 co-relation queries the response was YES. [2021-03-25 09:04:55,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 23 events. 1/23 cut-off events. For 43/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 56. Up to 5 conditions per place. [2021-03-25 09:04:55,611 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-03-25 09:04:55,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-03-25 09:04:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:04:55,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:04:55,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:04:55,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:04:55,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:55,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:04:55,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 09:04:55,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:55,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:55,620 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:04:55,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-03-25 09:04:55,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 74 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 09:04:55,622 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-03-25 09:04:55,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-03-25 09:04:55,622 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2021-03-25 09:04:55,623 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:55,623 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 09:04:55,623 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 09:04:55,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-03-25 09:04:55,628 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 09:04:55,628 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-03-25 09:04:55,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 19 events. 0/19 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:04:55,628 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 09:04:55,629 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:55,629 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:55,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 09:04:55,630 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-03-25 09:04:55,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:55,630 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:55,631 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:55,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:04:55,631 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -15909717, now seen corresponding path program 4 times [2021-03-25 09:04:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:55,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890862579] [2021-03-25 09:04:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:55,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:55,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:55,742 INFO L142 QuantifierPusher]: treesize reduction 8958, result has 1.7 percent of original size [2021-03-25 09:04:55,744 INFO L147 QuantifierPusher]: treesize reduction 37, result has 75.8 percent of original size 116 [2021-03-25 09:04:55,872 INFO L142 QuantifierPusher]: treesize reduction 11767, result has 6.0 percent of original size [2021-03-25 09:04:55,878 INFO L147 QuantifierPusher]: treesize reduction 63, result has 91.6 percent of original size 691 [2021-03-25 09:04:56,151 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-25 09:04:56,152 INFO L142 QuantifierPusher]: treesize reduction 105, result has 46.7 percent of original size [2021-03-25 09:04:56,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-03-25 09:04:56,201 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 09:04:56,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890862579] [2021-03-25 09:04:56,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:56,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:56,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473171288] [2021-03-25 09:04:56,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:56,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:56,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:56,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:56,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:56,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:56,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:56,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:56,450 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-03-25 09:04:56,747 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2021-03-25 09:04:56,757 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-25 09:04:56,757 INFO L130 PetriNetUnfolder]: For 34/37 co-relation queries the response was YES. [2021-03-25 09:04:56,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 20 events. 1/20 cut-off events. For 34/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 55. Up to 5 conditions per place. [2021-03-25 09:04:56,758 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-03-25 09:04:56,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-03-25 09:04:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-03-25 09:04:56,759 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-03-25 09:04:56,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-03-25 09:04:56,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-03-25 09:04:56,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:56,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-03-25 09:04:56,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 09:04:56,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:56,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:56,761 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-03-25 09:04:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-03-25 09:04:56,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 14 transitions, 88 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 09:04:56,762 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-03-25 09:04:56,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=10} [2021-03-25 09:04:56,763 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2021-03-25 09:04:56,763 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:56,763 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 09:04:56,763 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 09:04:56,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-03-25 09:04:56,766 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 09:04:56,766 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 09:04:56,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 10 events. 0/10 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:04:56,766 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 09:04:56,767 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:56,767 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:56,767 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 09:04:56,768 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-03-25 09:04:56,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:56,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:56,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:56,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:04:56,768 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:56,769 INFO L82 PathProgramCache]: Analyzing trace with hash 815259183, now seen corresponding path program 5 times [2021-03-25 09:04:56,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:56,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737985800] [2021-03-25 09:04:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:56,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:56,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:56,913 INFO L142 QuantifierPusher]: treesize reduction 17560, result has 25.0 percent of original size [2021-03-25 09:04:56,942 INFO L147 QuantifierPusher]: treesize reduction 2578, result has 56.0 percent of original size 3279 [2021-03-25 09:04:57,449 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 61 [2021-03-25 09:04:57,467 INFO L142 QuantifierPusher]: treesize reduction 1219, result has 36.3 percent of original size [2021-03-25 09:04:57,472 INFO L147 QuantifierPusher]: treesize reduction 80, result has 88.5 percent of original size 616 [2021-03-25 09:04:57,795 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-03-25 09:04:57,805 INFO L142 QuantifierPusher]: treesize reduction 230, result has 36.3 percent of original size [2021-03-25 09:04:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-25 09:04:57,891 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 09:04:57,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737985800] [2021-03-25 09:04:57,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:57,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:57,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123223976] [2021-03-25 09:04:57,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:57,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:57,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:57,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 10 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:57,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:57,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:57,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:58,027 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-03-25 09:04:58,180 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-03-25 09:04:58,185 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 09:04:58,186 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 09:04:58,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 0/16 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:04:58,186 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-03-25 09:04:58,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 80 flow [2021-03-25 09:04:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-03-25 09:04:58,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-03-25 09:04:58,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-03-25 09:04:58,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-03-25 09:04:58,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:58,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-03-25 09:04:58,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 09:04:58,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:58,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:58,189 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-03-25 09:04:58,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 80 flow [2021-03-25 09:04:58,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 47 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-25 09:04:58,190 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-03-25 09:04:58,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=35, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2021-03-25 09:04:58,190 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2021-03-25 09:04:58,190 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:58,190 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 09:04:58,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 09:04:58,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-03-25 09:04:58,193 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 09:04:58,193 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:04:58,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 0/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:04:58,193 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 09:04:58,194 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:58,194 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:58,194 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 09:04:58,194 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-03-25 09:04:58,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:58,195 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:04:58,195 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:04:58,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 09:04:58,195 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:04:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:04:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash -902489877, now seen corresponding path program 6 times [2021-03-25 09:04:58,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:04:58,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738802560] [2021-03-25 09:04:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:04:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:04:58,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:04:58,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:04:58,449 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 280 [2021-03-25 09:04:58,450 INFO L142 QuantifierPusher]: treesize reduction 42009, result has 11.0 percent of original size [2021-03-25 09:04:58,473 INFO L147 QuantifierPusher]: treesize reduction 1231, result has 76.3 percent of original size 3974 [2021-03-25 09:04:59,027 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 53 [2021-03-25 09:04:59,048 INFO L142 QuantifierPusher]: treesize reduction 960, result has 49.3 percent of original size [2021-03-25 09:04:59,053 INFO L147 QuantifierPusher]: treesize reduction 346, result has 63.0 percent of original size 589 [2021-03-25 09:04:59,360 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-03-25 09:04:59,364 INFO L142 QuantifierPusher]: treesize reduction 230, result has 36.3 percent of original size [2021-03-25 09:04:59,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-25 09:04:59,431 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 09:04:59,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738802560] [2021-03-25 09:04:59,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:04:59,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:04:59,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463358252] [2021-03-25 09:04:59,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:04:59,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:04:59,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:04:59,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:04:59,433 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:04:59,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:59,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:04:59,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:04:59,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:04:59,568 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-03-25 09:04:59,706 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-03-25 09:04:59,708 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 09:04:59,708 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 09:04:59,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 0/10 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:04:59,708 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-03-25 09:04:59,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-03-25 09:04:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:04:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:04:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-03-25 09:04:59,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-03-25 09:04:59,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-03-25 09:04:59,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-03-25 09:04:59,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:04:59,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-03-25 09:04:59,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 09:04:59,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:59,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 09:04:59,710 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-03-25 09:04:59,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-03-25 09:04:59,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 10 transitions, 40 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 09:04:59,711 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-25 09:04:59,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=5, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-25 09:04:59,711 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2021-03-25 09:04:59,711 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:04:59,711 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 09:04:59,712 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 09:04:59,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:04:59,712 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:04:59,712 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:04:59,712 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 09:04:59,712 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:04:59,712 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:04:59,712 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:04:59,712 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 09:04:59,713 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:04:59,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-03-25 09:04:59,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 09:04:59,716 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:04:59 BasicIcfg [2021-03-25 09:04:59,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:04:59,717 INFO L168 Benchmark]: Toolchain (without parser) took 10291.19 ms. Allocated memory was 255.9 MB in the beginning and 572.5 MB in the end (delta: 316.7 MB). Free memory was 236.3 MB in the beginning and 375.9 MB in the end (delta: -139.7 MB). Peak memory consumption was 177.7 MB. Max. memory is 16.0 GB. [2021-03-25 09:04:59,717 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:04:59,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:04:59,718 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.8 MB in the end (delta: 756.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:04:59,718 INFO L168 Benchmark]: RCFGBuilder took 300.61 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 231.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.0 GB. [2021-03-25 09:04:59,718 INFO L168 Benchmark]: TraceAbstraction took 9942.57 ms. Allocated memory was 255.9 MB in the beginning and 572.5 MB in the end (delta: 316.7 MB). Free memory was 231.4 MB in the beginning and 375.9 MB in the end (delta: -144.5 MB). Peak memory consumption was 170.7 MB. Max. memory is 16.0 GB. [2021-03-25 09:04:59,720 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 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.8 MB in the end (delta: 756.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 300.61 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 231.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9942.57 ms. Allocated memory was 255.9 MB in the beginning and 572.5 MB in the end (delta: 316.7 MB). Free memory was 231.4 MB in the beginning and 375.9 MB in the end (delta: -144.5 MB). Peak memory consumption was 170.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 204.2ms, 24 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 10 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: 0, positive unconditional: 18, 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: 15, positive: 15, positive conditional: 0, positive unconditional: 15, 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: 15, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , 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: 10.2ms, 21 PlacesBefore, 20 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 18 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3ms, 25 PlacesBefore, 24 PlacesAfterwards, 11 TransitionsBefore, 11 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: 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 27 PlacesBefore, 26 PlacesAfterwards, 12 TransitionsBefore, 12 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: 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9ms, 30 PlacesBefore, 27 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3ms, 23 PlacesBefore, 21 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 2 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 22 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: 68]: 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: 5.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9833.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2706.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 268.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 94 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6957.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=3, InterpolantAutomatonStates: 30, 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: 14.2ms SsaConstructionTime, 220.3ms SatisfiabilityAnalysisTime, 6442.2ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 4131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...