/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:30:03,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:30:03,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:30:03,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 09:30:03,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:30:03,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:30:03,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:30:03,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:30:03,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:30:03,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:30:03,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:30:03,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:30:03,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:30:03,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:30:03,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:30:03,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:30:03,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:30:03,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:30:03,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:30:03,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:30:03,849 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-NoLbe.epf [2021-06-13 09:30:03,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:30:03,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:30:03,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:30:03,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:30:03,874 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:30:03,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:30:03,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:30:03,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:30:03,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:30:03,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:30:03,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:30:03,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:30:03,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:30:03,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:30:03,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:30:03,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:30:03,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:30:03,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:30:03,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:30:03,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:30:03,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:30:03,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:30:03,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:30:03,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:30:03,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:30:04,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:30:04,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:30:04,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:30:04,245 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:30:04,246 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:30:04,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl [2021-06-13 09:30:04,247 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl' [2021-06-13 09:30:04,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:30:04,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:30:04,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:30:04,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:30:04,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:30:04,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:30:04,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:30:04,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:30:04,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:30:04,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... [2021-06-13 09:30:04,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:30:04,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:30:04,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:30:04,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:30:04,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:30:04,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:30:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:30:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:30:04,742 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:30:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:30:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:30:04,742 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:30:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:30:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:30:04,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 09:30:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 09:30:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 09:30:04,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:30:04,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:30:04,996 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:30:04,997 INFO L202 PluginConnector]: Adding new model time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:30:04 BoogieIcfgContainer [2021-06-13 09:30:04,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:30:04,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:30:04,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:30:05,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:30:05,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:30:04" (1/2) ... [2021-06-13 09:30:05,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f24ea0 and model type time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:30:05, skipping insertion in model container [2021-06-13 09:30:05,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:30:04" (2/2) ... [2021-06-13 09:30:05,004 INFO L111 eAbstractionObserver]: Analyzing ICFG time-trans.wvr.bpl [2021-06-13 09:30:05,009 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:30:05,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:30:05,009 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:30:05,040 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 09:30:05,058 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 09:30:05,093 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:30:05,093 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:30:05,093 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:30:05,094 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:30:05,094 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:30:05,094 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:30:05,094 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:30:05,094 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:30:05,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-06-13 09:30:05,137 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-13 09:30:05,137 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 09:30:05,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 09:30:05,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-06-13 09:30:05,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-06-13 09:30:05,164 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-06-13 09:30:05,164 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 09:30:05,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:05,165 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:05,166 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:05,170 INFO L82 PathProgramCache]: Analyzing trace with hash 936082789, now seen corresponding path program 1 times [2021-06-13 09:30:05,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:05,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484532809] [2021-06-13 09:30:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:05,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:05,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:05,430 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-06-13 09:30:05,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-13 09:30:05,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:05,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 09:30:05,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:05,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 09:30:05,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:05,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:05,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:05,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484532809] [2021-06-13 09:30:05,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484532809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:05,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:05,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:05,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068752884] [2021-06-13 09:30:05,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:05,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:05,599 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:05,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 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) [2021-06-13 09:30:05,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:05,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:05,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:05,821 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2021-06-13 09:30:05,821 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-06-13 09:30:05,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 40 events. 3/40 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2021-06-13 09:30:05,823 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2021-06-13 09:30:05,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 70 flow [2021-06-13 09:30:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:30:05,835 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:30:05,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:30:05,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:30:05,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:05,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:30:05,842 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) [2021-06-13 09:30:05,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:05,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:05,852 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:30:05,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 70 flow [2021-06-13 09:30:05,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 58 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-13 09:30:05,859 INFO L241 Difference]: Finished difference. Result has 25 places, 15 transitions, 49 flow [2021-06-13 09:30:05,860 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2021-06-13 09:30:05,861 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-06-13 09:30:05,861 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 49 flow [2021-06-13 09:30:05,861 INFO L483 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) [2021-06-13 09:30:05,861 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:05,861 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:05,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:30:05,862 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash 343204527, now seen corresponding path program 2 times [2021-06-13 09:30:05,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:05,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303878570] [2021-06-13 09:30:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:05,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:05,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:05,968 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-06-13 09:30:05,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-13 09:30:05,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-06-13 09:30:05,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 09:30:06,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:30:06,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:06,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:06,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303878570] [2021-06-13 09:30:06,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303878570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:06,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:06,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:06,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28579625] [2021-06-13 09:30:06,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:06,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:06,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:06,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:06,068 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:06,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 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) [2021-06-13 09:30:06,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:06,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:06,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:06,200 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-06-13 09:30:06,200 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-06-13 09:30:06,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 42 events. 2/42 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 151 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2021-06-13 09:30:06,203 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2021-06-13 09:30:06,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 93 flow [2021-06-13 09:30:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:30:06,207 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:30:06,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:06,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,213 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) [2021-06-13 09:30:06,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,219 INFO L185 Difference]: Start difference. First operand has 25 places, 15 transitions, 49 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:30:06,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 93 flow [2021-06-13 09:30:06,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 86 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-13 09:30:06,221 INFO L241 Difference]: Finished difference. Result has 29 places, 15 transitions, 59 flow [2021-06-13 09:30:06,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=29, PETRI_TRANSITIONS=15} [2021-06-13 09:30:06,223 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2021-06-13 09:30:06,223 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 59 flow [2021-06-13 09:30:06,223 INFO L483 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) [2021-06-13 09:30:06,223 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:06,223 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:06,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:30:06,223 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:06,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash 244017401, now seen corresponding path program 3 times [2021-06-13 09:30:06,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:06,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738392156] [2021-06-13 09:30:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:06,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,296 INFO L142 QuantifierPusher]: treesize reduction 16, result has 52.9 percent of original size [2021-06-13 09:30:06,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-13 09:30:06,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-06-13 09:30:06,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-06-13 09:30:06,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:30:06,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:06,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:06,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738392156] [2021-06-13 09:30:06,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738392156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:06,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:06,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:06,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749233240] [2021-06-13 09:30:06,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:06,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:06,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:06,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:06,372 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:06,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 15 transitions, 59 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) [2021-06-13 09:30:06,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:06,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:06,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:06,489 INFO L129 PetriNetUnfolder]: 1/34 cut-off events. [2021-06-13 09:30:06,489 INFO L130 PetriNetUnfolder]: For 42/45 co-relation queries the response was YES. [2021-06-13 09:30:06,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 34 events. 1/34 cut-off events. For 42/45 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 1 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 65. Up to 5 conditions per place. [2021-06-13 09:30:06,490 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2021-06-13 09:30:06,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 101 flow [2021-06-13 09:30:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:30:06,493 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:30:06,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:06,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:30:06,495 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) [2021-06-13 09:30:06,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,497 INFO L185 Difference]: Start difference. First operand has 29 places, 15 transitions, 59 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:30:06,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 101 flow [2021-06-13 09:30:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 82 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-13 09:30:06,501 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 70 flow [2021-06-13 09:30:06,502 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2021-06-13 09:30:06,502 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2021-06-13 09:30:06,502 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 70 flow [2021-06-13 09:30:06,502 INFO L483 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) [2021-06-13 09:30:06,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:06,502 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:06,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:30:06,503 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1021396753, now seen corresponding path program 4 times [2021-06-13 09:30:06,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:06,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392492172] [2021-06-13 09:30:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:06,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,541 INFO L142 QuantifierPusher]: treesize reduction 16, result has 52.9 percent of original size [2021-06-13 09:30:06,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-13 09:30:06,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-06-13 09:30:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 09:30:06,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:30:06,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:06,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:06,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392492172] [2021-06-13 09:30:06,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392492172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:06,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:06,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:06,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902549465] [2021-06-13 09:30:06,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:06,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:06,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:06,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:06,621 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:06,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 70 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) [2021-06-13 09:30:06,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:06,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:06,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:06,723 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-06-13 09:30:06,723 INFO L130 PetriNetUnfolder]: For 41/46 co-relation queries the response was YES. [2021-06-13 09:30:06,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 28 events. 1/28 cut-off events. For 41/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 1 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 62. Up to 5 conditions per place. [2021-06-13 09:30:06,724 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 1 changer transitions 4/18 dead transitions. [2021-06-13 09:30:06,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 18 transitions, 100 flow [2021-06-13 09:30:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-06-13 09:30:06,726 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-06-13 09:30:06,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-06-13 09:30:06,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-06-13 09:30:06,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:06,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-06-13 09:30:06,727 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) [2021-06-13 09:30:06,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:06,727 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 70 flow. Second operand 5 states and 78 transitions. [2021-06-13 09:30:06,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 18 transitions, 100 flow [2021-06-13 09:30:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 18 transitions, 96 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 09:30:06,729 INFO L241 Difference]: Finished difference. Result has 34 places, 14 transitions, 57 flow [2021-06-13 09:30:06,729 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=34, PETRI_TRANSITIONS=14} [2021-06-13 09:30:06,730 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2021-06-13 09:30:06,730 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 14 transitions, 57 flow [2021-06-13 09:30:06,730 INFO L483 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) [2021-06-13 09:30:06,730 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:06,730 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:06,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:30:06,730 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:06,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1012983565, now seen corresponding path program 5 times [2021-06-13 09:30:06,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:06,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311265588] [2021-06-13 09:30:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:06,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,799 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-06-13 09:30:06,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-13 09:30:06,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 09:30:06,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 09:30:06,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:06,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:06,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:06,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311265588] [2021-06-13 09:30:06,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311265588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:06,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:06,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:06,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42754268] [2021-06-13 09:30:06,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:06,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:06,902 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:06,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 14 transitions, 57 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) [2021-06-13 09:30:06,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:06,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:06,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:07,024 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-06-13 09:30:07,024 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 09:30:07,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 23 events. 0/23 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-13 09:30:07,025 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 1 changer transitions 2/16 dead transitions. [2021-06-13 09:30:07,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 16 transitions, 90 flow [2021-06-13 09:30:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-06-13 09:30:07,027 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-06-13 09:30:07,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-06-13 09:30:07,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-06-13 09:30:07,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:07,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-06-13 09:30:07,028 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) [2021-06-13 09:30:07,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:07,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:07,029 INFO L185 Difference]: Start difference. First operand has 34 places, 14 transitions, 57 flow. Second operand 5 states and 77 transitions. [2021-06-13 09:30:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 16 transitions, 90 flow [2021-06-13 09:30:07,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 60 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-06-13 09:30:07,031 INFO L241 Difference]: Finished difference. Result has 29 places, 14 transitions, 47 flow [2021-06-13 09:30:07,031 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=14} [2021-06-13 09:30:07,031 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2021-06-13 09:30:07,031 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 47 flow [2021-06-13 09:30:07,031 INFO L483 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) [2021-06-13 09:30:07,032 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:30:07,032 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:30:07,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:30:07,032 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:30:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:30:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1495599047, now seen corresponding path program 6 times [2021-06-13 09:30:07,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:30:07,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285034497] [2021-06-13 09:30:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:30:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:30:07,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:07,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:07,062 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-06-13 09:30:07,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-13 09:30:07,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-06-13 09:30:07,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-06-13 09:30:07,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:07,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:30:07,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:30:07,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:30:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:30:07,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:30:07,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285034497] [2021-06-13 09:30:07,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285034497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:30:07,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:30:07,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:30:07,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382122692] [2021-06-13 09:30:07,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:30:07,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:30:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:30:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:30:07,126 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:30:07,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions, 47 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) [2021-06-13 09:30:07,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:30:07,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:30:07,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:30:07,206 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-13 09:30:07,206 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-13 09:30:07,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 14 events. 0/14 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 09:30:07,207 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-06-13 09:30:07,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 13 transitions, 55 flow [2021-06-13 09:30:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:30:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:30:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-06-13 09:30:07,208 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-06-13 09:30:07,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-06-13 09:30:07,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-06-13 09:30:07,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:30:07,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-06-13 09:30:07,209 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) [2021-06-13 09:30:07,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:07,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:30:07,210 INFO L185 Difference]: Start difference. First operand has 29 places, 14 transitions, 47 flow. Second operand 5 states and 75 transitions. [2021-06-13 09:30:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 13 transitions, 55 flow [2021-06-13 09:30:07,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 51 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 09:30:07,210 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-06-13 09:30:07,211 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-06-13 09:30:07,211 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-06-13 09:30:07,211 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2021-06-13 09:30:07,211 INFO L483 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) [2021-06-13 09:30:07,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:30:07,213 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 09:30:07,216 INFO L202 PluginConnector]: Adding new model time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 09:30:07 BasicIcfg [2021-06-13 09:30:07,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 09:30:07,217 INFO L168 Benchmark]: Toolchain (without parser) took 2598.36 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 183.4 MB in the beginning and 210.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2021-06-13 09:30:07,217 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:30:07,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 203.4 MB. Free memory was 183.3 MB in the beginning and 181.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:30:07,218 INFO L168 Benchmark]: Boogie Preprocessor took 12.44 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 181.0 MB in the end (delta: 858.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:30:07,219 INFO L168 Benchmark]: RCFGBuilder took 327.56 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 09:30:07,219 INFO L168 Benchmark]: TraceAbstraction took 2217.00 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 168.2 MB in the beginning and 210.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. [2021-06-13 09:30:07,221 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 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 203.4 MB. Free memory was 183.3 MB in the beginning and 181.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.44 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 181.0 MB in the end (delta: 858.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 327.56 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2217.00 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 168.2 MB in the beginning and 210.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2122.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 881.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 94 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 984.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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: 19.7ms SsaConstructionTime, 106.1ms SatisfiabilityAnalysisTime, 899.7ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1302 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...