/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/simpl-str-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:23:02,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:23:02,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:23:02,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:23:02,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:23:02,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:23:02,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:23:02,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:23:02,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:23:02,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:23:02,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:23:02,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:23:02,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:23:02,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:23:02,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:23:02,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:23:02,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:23:02,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:23:02,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:23:02,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:23:02,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:23:02,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:23:02,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:23:02,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:23:02,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:23:02,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:23:02,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:23:02,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:23:02,302 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 09:23:02,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:23:02,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:23:02,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:23:02,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:23:02,322 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:23:02,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:23:02,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:23:02,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:23:02,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:23:02,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:23:02,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:23:02,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:23:02,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:23:02,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:23:02,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:23:02,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:23:02,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:23:02,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:23:02,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:23:02,607 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:23:02,612 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:23:02,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl [2021-03-25 09:23:02,622 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl' [2021-03-25 09:23:02,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:23:02,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:23:02,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:23:02,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:23:02,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:23:02,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:23:02,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:23:02,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:23:02,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:23:02,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... [2021-03-25 09:23:02,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:23:02,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:23:02,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:23:02,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:23:02,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:23:02,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:23:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:23:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:23:02,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:23:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:23:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:23:02,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:23:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:23:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:23:02,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:23:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:23:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:23:02,777 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 09:23:02,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:23:02,946 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:23:02,948 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:23:02 BoogieIcfgContainer [2021-03-25 09:23:02,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:23:02,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:23:02,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:23:02,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:23:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:23:02" (1/2) ... [2021-03-25 09:23:02,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a47d672 and model type simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:23:02, skipping insertion in model container [2021-03-25 09:23:02,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:23:02" (2/2) ... [2021-03-25 09:23:02,962 INFO L111 eAbstractionObserver]: Analyzing ICFG simpl-str-trans.wvr.bpl [2021-03-25 09:23:02,971 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:23:02,975 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:23:02,977 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:23:03,044 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 09:23:03,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 09:23:03,088 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:23:03,089 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:23:03,089 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:23:03,089 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:23:03,089 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:23:03,089 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:23:03,089 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:23:03,089 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:23:03,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 09:23:03,125 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 09:23:03,126 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:23:03,127 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 09:23:03,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 09:23:03,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-03-25 09:23:03,131 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:03,140 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 09:23:03,147 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 09:23:03,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-03-25 09:23:03,165 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 09:23:03,165 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:23:03,166 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 12 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 09:23:03,168 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 09:23:03,283 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 09:23:03,283 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 09:23:03,285 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 154 [2021-03-25 09:23:03,292 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-25 09:23:03,292 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:23:03,292 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:03,293 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:03,293 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1899370987, now seen corresponding path program 1 times [2021-03-25 09:23:03,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:03,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968551127] [2021-03-25 09:23:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:03,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:03,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 41.3 percent of original size [2021-03-25 09:23:03,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:23:03,491 INFO L142 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-03-25 09:23:03,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 09:23:03,517 INFO L142 QuantifierPusher]: treesize reduction 30, result has 45.5 percent of original size [2021-03-25 09:23:03,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 09:23:03,540 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 09:23:03,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968551127] [2021-03-25 09:23:03,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:03,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:03,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428443421] [2021-03-25 09:23:03,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:03,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:03,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:03,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:03,559 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 09:23:03,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:03,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:03,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:03,665 INFO L129 PetriNetUnfolder]: 3/29 cut-off events. [2021-03-25 09:23:03,665 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-25 09:23:03,666 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 7. Compared 82 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 09:23:03,667 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-03-25 09:23:03,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 62 flow [2021-03-25 09:23:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:23:03,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:23:03,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:23:03,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:23:03,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:03,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:23:03,682 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 09:23:03,685 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 09:23:03,685 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 09:23:03,686 INFO L185 Difference]: Start difference. First operand has 20 places, 10 transitions, 38 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:23:03,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 62 flow [2021-03-25 09:23:03,690 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 09:23:03,691 INFO L241 Difference]: Finished difference. Result has 21 places, 11 transitions, 41 flow [2021-03-25 09:23:03,693 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 09:23:03,693 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2021-03-25 09:23:03,693 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:03,694 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 09:23:03,694 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 09:23:03,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-03-25 09:23:03,699 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 09:23:03,700 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 09:23:03,700 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 09:23:03,700 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 09:23:03,701 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:03,701 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:03,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 09:23:03,703 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-03-25 09:23:03,703 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 09:23:03,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:03,704 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:03,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:23:03,705 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:03,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1456775317, now seen corresponding path program 2 times [2021-03-25 09:23:03,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:03,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217557323] [2021-03-25 09:23:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:03,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:03,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:03,811 INFO L142 QuantifierPusher]: treesize reduction 68, result has 34.6 percent of original size [2021-03-25 09:23:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 09:23:03,853 INFO L142 QuantifierPusher]: treesize reduction 59, result has 49.6 percent of original size [2021-03-25 09:23:03,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-25 09:23:03,942 INFO L142 QuantifierPusher]: treesize reduction 59, result has 35.9 percent of original size [2021-03-25 09:23:03,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 09:23:03,966 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 09:23:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217557323] [2021-03-25 09:23:03,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:03,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:03,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477088611] [2021-03-25 09:23:03,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:03,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:03,976 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:03,980 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 09:23:03,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:03,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:03,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:04,154 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-03-25 09:23:04,154 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-03-25 09:23:04,155 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 09:23:04,157 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-03-25 09:23:04,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-03-25 09:23:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:23:04,160 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:23:04,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:04,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,164 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 09:23:04,165 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 09:23:04,165 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 09:23:04,165 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:23:04,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-03-25 09:23:04,167 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 09:23:04,168 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-03-25 09:23:04,168 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 09:23:04,169 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2021-03-25 09:23:04,169 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:04,169 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 09:23:04,170 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 09:23:04,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-03-25 09:23:04,181 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 09:23:04,182 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-03-25 09:23:04,182 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 23 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 09:23:04,182 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 09:23:04,185 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:04,185 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:04,185 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 09:23:04,186 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-03-25 09:23:04,187 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 09:23:04,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:04,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:04,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:23:04,187 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash 127869563, now seen corresponding path program 3 times [2021-03-25 09:23:04,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:04,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871192330] [2021-03-25 09:23:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:04,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:04,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:04,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-03-25 09:23:04,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 09:23:04,276 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-03-25 09:23:04,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-25 09:23:04,293 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-25 09:23:04,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:23:04,305 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 09:23:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871192330] [2021-03-25 09:23:04,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:04,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:04,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241546441] [2021-03-25 09:23:04,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:04,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:04,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:04,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:04,307 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:04,307 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 09:23:04,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:04,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:04,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:04,389 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-25 09:23:04,389 INFO L130 PetriNetUnfolder]: For 43/46 co-relation queries the response was YES. [2021-03-25 09:23:04,390 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 09:23:04,390 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-03-25 09:23:04,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-03-25 09:23:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 09:23:04,391 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 09:23:04,391 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:04,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 09:23:04,392 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 09:23:04,393 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 09:23:04,393 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 09:23:04,393 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-03-25 09:23:04,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-03-25 09:23:04,394 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 09:23:04,395 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-03-25 09:23:04,395 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 09:23:04,395 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2021-03-25 09:23:04,395 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:04,395 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 09:23:04,396 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 09:23:04,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-03-25 09:23:04,399 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 09:23:04,400 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-03-25 09:23:04,400 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 29 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 09:23:04,400 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 09:23:04,401 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:04,401 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:04,401 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 09:23:04,402 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-03-25 09:23:04,402 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 09:23:04,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:04,402 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:04,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:23:04,402 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1979317449, now seen corresponding path program 4 times [2021-03-25 09:23:04,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:04,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274569642] [2021-03-25 09:23:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:04,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:04,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:04,425 INFO L142 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-03-25 09:23:04,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:23:04,435 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-03-25 09:23:04,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 09:23:04,447 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-25 09:23:04,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:23:04,459 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 09:23:04,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274569642] [2021-03-25 09:23:04,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:04,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:04,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279762021] [2021-03-25 09:23:04,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:04,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:04,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:04,461 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 09:23:04,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:04,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:04,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:04,564 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-25 09:23:04,565 INFO L130 PetriNetUnfolder]: For 34/37 co-relation queries the response was YES. [2021-03-25 09:23:04,565 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 09:23:04,565 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-03-25 09:23:04,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-03-25 09:23:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-03-25 09:23:04,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-03-25 09:23:04,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-03-25 09:23:04,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-03-25 09:23:04,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:04,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-03-25 09:23:04,582 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 09:23:04,582 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 09:23:04,582 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 09:23:04,582 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-03-25 09:23:04,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-03-25 09:23:04,583 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 09:23:04,584 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-03-25 09:23:04,584 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 09:23:04,584 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2021-03-25 09:23:04,584 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:04,584 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 09:23:04,585 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 09:23:04,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-03-25 09:23:04,587 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 09:23:04,587 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 09:23:04,587 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 09:23:04,587 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 09:23:04,588 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:04,588 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:04,588 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 09:23:04,589 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-03-25 09:23:04,589 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 09:23:04,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:04,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:04,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:23:04,589 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1484480947, now seen corresponding path program 5 times [2021-03-25 09:23:04,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:04,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832990879] [2021-03-25 09:23:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:04,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:04,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:04,617 INFO L142 QuantifierPusher]: treesize reduction 77, result has 18.1 percent of original size [2021-03-25 09:23:04,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 09:23:04,627 INFO L142 QuantifierPusher]: treesize reduction 54, result has 43.2 percent of original size [2021-03-25 09:23:04,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-25 09:23:04,668 INFO L142 QuantifierPusher]: treesize reduction 46, result has 40.3 percent of original size [2021-03-25 09:23:04,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 09:23:04,693 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 09:23:04,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832990879] [2021-03-25 09:23:04,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:04,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:04,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833957403] [2021-03-25 09:23:04,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:04,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:04,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:04,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:04,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:04,701 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 09:23:04,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:04,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:04,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:04,796 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 09:23:04,796 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 09:23:04,797 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 09:23:04,797 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-03-25 09:23:04,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 80 flow [2021-03-25 09:23:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-03-25 09:23:04,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-03-25 09:23:04,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-03-25 09:23:04,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-03-25 09:23:04,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:04,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-03-25 09:23:04,802 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 09:23:04,804 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 09:23:04,804 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 09:23:04,804 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-03-25 09:23:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 80 flow [2021-03-25 09:23:04,805 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 09:23:04,806 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-03-25 09:23:04,806 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 09:23:04,806 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2021-03-25 09:23:04,806 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:04,806 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 09:23:04,806 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 09:23:04,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-03-25 09:23:04,810 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 09:23:04,810 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:23:04,811 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 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:23:04,811 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 09:23:04,812 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:04,813 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:04,813 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 09:23:04,816 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-03-25 09:23:04,816 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 09:23:04,816 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:23:04,816 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:23:04,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 09:23:04,817 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:23:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:23:04,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1092737289, now seen corresponding path program 6 times [2021-03-25 09:23:04,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:23:04,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861443160] [2021-03-25 09:23:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:23:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:23:04,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:23:04,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:23:04,884 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-03-25 09:23:04,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 09:23:04,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-25 09:23:04,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 09:23:04,923 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-25 09:23:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:23:04,935 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 09:23:04,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861443160] [2021-03-25 09:23:04,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:23:04,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:23:04,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894802681] [2021-03-25 09:23:04,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:23:04,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:23:04,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:23:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:23:04,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 09:23:04,942 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 09:23:04,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:23:04,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 09:23:04,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:23:05,026 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 09:23:05,026 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 09:23:05,026 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 09:23:05,026 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-03-25 09:23:05,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-03-25 09:23:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:23:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:23:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-03-25 09:23:05,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-03-25 09:23:05,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-03-25 09:23:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-03-25 09:23:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:23:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-03-25 09:23:05,028 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 09:23:05,029 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 09:23:05,029 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 09:23:05,029 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-03-25 09:23:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-03-25 09:23:05,030 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 09:23:05,030 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-25 09:23:05,031 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 09:23:05,031 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2021-03-25 09:23:05,031 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:23:05,031 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 09:23:05,031 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 09:23:05,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:23:05,031 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:23:05,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:23:05,032 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 09:23:05,032 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:23:05,032 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:23:05,032 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:23:05,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 09:23:05,033 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:23:05,033 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 09:23:05,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 09:23:05,037 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:23:05 BasicIcfg [2021-03-25 09:23:05,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:23:05,038 INFO L168 Benchmark]: Toolchain (without parser) took 2367.42 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 236.6 MB in the beginning and 312.3 MB in the end (delta: -75.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.0 GB. [2021-03-25 09:23:05,039 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:23:05,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.11 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:23:05,044 INFO L168 Benchmark]: Boogie Preprocessor took 13.51 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 950.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:23:05,044 INFO L168 Benchmark]: RCFGBuilder took 239.47 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 238.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. [2021-03-25 09:23:05,045 INFO L168 Benchmark]: TraceAbstraction took 2085.78 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 238.2 MB in the beginning and 312.3 MB in the end (delta: -74.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.0 GB. [2021-03-25 09:23:05,046 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 0.49 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.11 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.51 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 950.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 239.47 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 238.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2085.78 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 238.2 MB in the beginning and 312.3 MB in the end (delta: -74.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 135.5ms, 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: 7.5ms, 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: 15.0ms, 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: 5.1ms, 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: 3.2ms, 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: 6.2ms, 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: 0.8ms, 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: 47]: 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: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1949.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 745.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 199.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 94 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 827.5ms 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: 10.2ms SsaConstructionTime, 108.9ms SatisfiabilityAnalysisTime, 705.0ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1041 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...