/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:59:44,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:59:44,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:59:44,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 15:59:44,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 15:59:44,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 15:59:44,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 15:59:44,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 15:59:44,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 15:59:44,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 15:59:44,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 15:59:44,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 15:59:44,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:59:44,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:59:44,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:59:44,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:59:44,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:59:44,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:59:44,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:59:44,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:59:44,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:59:44,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:59:44,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:59:44,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:59:44,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:59:44,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:59:44,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:59:44,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:59:44,937 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-FA-SemanticLbe.epf [2021-03-11 15:59:44,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:59:44,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:59:44,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:59:44,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:59:44,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:59:44,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:59:44,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:59:44,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:59:44,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:59:44,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:59:45,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:59:45,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:59:45,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:59:45,216 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:59:45,217 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:59:45,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-03-11 15:59:45,226 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-03-11 15:59:45,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:59:45,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:59:45,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:59:45,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:59:45,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:59:45,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:59:45,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:59:45,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:59:45,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:59:45,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/1) ... [2021-03-11 15:59:45,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:59:45,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:59:45,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:59:45,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:59:45,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (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 [2021-03-11 15:59:45,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:59:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:59:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:59:45,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:59:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:59:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:59:45,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:59:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:59:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:59:45,341 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 15:59:45,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:59:45,452 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:59:45,453 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:59:45 BoogieIcfgContainer [2021-03-11 15:59:45,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:59:45,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:59:45,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:59:45,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:59:45,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:59:45" (1/2) ... [2021-03-11 15:59:45,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8a15ad and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:59:45, skipping insertion in model container [2021-03-11 15:59:45,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:59:45" (2/2) ... [2021-03-11 15:59:45,457 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-03-11 15:59:45,461 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:59:45,461 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:59:45,463 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:59:45,463 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:59:45,484 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 15:59:45,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 15:59:45,506 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:59:45,506 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:59:45,506 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:59:45,507 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:59:45,507 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:59:45,507 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:59:45,507 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:59:45,507 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:59:45,514 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:59:45,521 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 78 flow [2021-03-11 15:59:45,522 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 78 flow [2021-03-11 15:59:45,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-03-11 15:59:45,546 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-11 15:59:45,547 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 15:59:45,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 15:59:45,549 INFO L116 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-11 15:59:45,827 INFO L131 LiptonReduction]: Checked pairs total: 738 [2021-03-11 15:59:45,827 INFO L133 LiptonReduction]: Total number of compositions: 9 [2021-03-11 15:59:45,834 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-03-11 15:59:45,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 85 states, 83 states have (on average 1.7710843373493976) internal successors, (147), 84 states have internal predecessors, (147), 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) [2021-03-11 15:59:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7710843373493976) internal successors, (147), 84 states have internal predecessors, (147), 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) [2021-03-11 15:59:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:45,847 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:45,848 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:45,848 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 408392767, now seen corresponding path program 1 times [2021-03-11 15:59:45,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:45,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706176938] [2021-03-11 15:59:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:45,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 15:59:46,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706176938] [2021-03-11 15:59:46,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 15:59:46,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904097130] [2021-03-11 15:59:46,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 15:59:46,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 15:59:46,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:59:46,075 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7710843373493976) internal successors, (147), 84 states have internal predecessors, (147), 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) Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,177 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2021-03-11 15:59:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 15:59:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,186 INFO L225 Difference]: With dead ends: 112 [2021-03-11 15:59:46,186 INFO L226 Difference]: Without dead ends: 93 [2021-03-11 15:59:46,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 15:59:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-03-11 15:59:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-03-11 15:59:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.726027397260274) internal successors, (126), 73 states have internal predecessors, (126), 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) [2021-03-11 15:59:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 126 transitions. [2021-03-11 15:59:46,221 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 126 transitions. Word has length 20 [2021-03-11 15:59:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,221 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 126 transitions. [2021-03-11 15:59:46,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 126 transitions. [2021-03-11 15:59:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:59:46,224 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash -419184769, now seen corresponding path program 2 times [2021-03-11 15:59:46,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814264748] [2021-03-11 15:59:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 15:59:46,317 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 15:59:46,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 15:59:46,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814264748] [2021-03-11 15:59:46,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 15:59:46,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550070525] [2021-03-11 15:59:46,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 15:59:46,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 15:59:46,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 15:59:46,335 INFO L87 Difference]: Start difference. First operand 74 states and 126 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,379 INFO L93 Difference]: Finished difference Result 113 states and 194 transitions. [2021-03-11 15:59:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 15:59:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,385 INFO L225 Difference]: With dead ends: 113 [2021-03-11 15:59:46,385 INFO L226 Difference]: Without dead ends: 113 [2021-03-11 15:59:46,385 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 15:59:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-03-11 15:59:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 89. [2021-03-11 15:59:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7159090909090908) internal successors, (151), 88 states have internal predecessors, (151), 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) [2021-03-11 15:59:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 151 transitions. [2021-03-11 15:59:46,397 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 151 transitions. Word has length 20 [2021-03-11 15:59:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,398 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 151 transitions. [2021-03-11 15:59:46,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 151 transitions. [2021-03-11 15:59:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,398 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:59:46,399 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1750219585, now seen corresponding path program 3 times [2021-03-11 15:59:46,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557098138] [2021-03-11 15:59:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 15:59:46,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557098138] [2021-03-11 15:59:46,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 15:59:46,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235199785] [2021-03-11 15:59:46,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 15:59:46,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 15:59:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:59:46,476 INFO L87 Difference]: Start difference. First operand 89 states and 151 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,562 INFO L93 Difference]: Finished difference Result 107 states and 173 transitions. [2021-03-11 15:59:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 15:59:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,563 INFO L225 Difference]: With dead ends: 107 [2021-03-11 15:59:46,563 INFO L226 Difference]: Without dead ends: 57 [2021-03-11 15:59:46,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 15:59:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-03-11 15:59:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2021-03-11 15:59:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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) [2021-03-11 15:59:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 76 transitions. [2021-03-11 15:59:46,567 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 76 transitions. Word has length 20 [2021-03-11 15:59:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,568 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 76 transitions. [2021-03-11 15:59:46,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 76 transitions. [2021-03-11 15:59:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:59:46,568 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -160389445, now seen corresponding path program 4 times [2021-03-11 15:59:46,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628864490] [2021-03-11 15:59:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 15:59:46,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 15:59:46,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,624 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-11 15:59:46,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628864490] [2021-03-11 15:59:46,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 15:59:46,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474889292] [2021-03-11 15:59:46,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 15:59:46,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 15:59:46,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 15:59:46,637 INFO L87 Difference]: Start difference. First operand 49 states and 76 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,684 INFO L93 Difference]: Finished difference Result 80 states and 120 transitions. [2021-03-11 15:59:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 15:59:46,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,685 INFO L225 Difference]: With dead ends: 80 [2021-03-11 15:59:46,685 INFO L226 Difference]: Without dead ends: 68 [2021-03-11 15:59:46,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 15:59:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-03-11 15:59:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 49. [2021-03-11 15:59:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 48 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) [2021-03-11 15:59:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 74 transitions. [2021-03-11 15:59:46,687 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 74 transitions. Word has length 20 [2021-03-11 15:59:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,687 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 74 transitions. [2021-03-11 15:59:46,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2021-03-11 15:59:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:59:46,688 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1291205757, now seen corresponding path program 5 times [2021-03-11 15:59:46,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244437214] [2021-03-11 15:59:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244437214] [2021-03-11 15:59:46,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 15:59:46,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878393043] [2021-03-11 15:59:46,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 15:59:46,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 15:59:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 15:59:46,700 INFO L87 Difference]: Start difference. First operand 49 states and 74 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,702 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2021-03-11 15:59:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 15:59:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,703 INFO L225 Difference]: With dead ends: 46 [2021-03-11 15:59:46,703 INFO L226 Difference]: Without dead ends: 45 [2021-03-11 15:59:46,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 15:59:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-03-11 15:59:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-03-11 15:59:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 44 states have internal predecessors, (68), 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) [2021-03-11 15:59:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 68 transitions. [2021-03-11 15:59:46,705 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 68 transitions. Word has length 20 [2021-03-11 15:59:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,705 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 68 transitions. [2021-03-11 15:59:46,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 68 transitions. [2021-03-11 15:59:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,705 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:59:46,706 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1164399199, now seen corresponding path program 6 times [2021-03-11 15:59:46,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508882506] [2021-03-11 15:59:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508882506] [2021-03-11 15:59:46,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 15:59:46,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596391351] [2021-03-11 15:59:46,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 15:59:46,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 15:59:46,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 15:59:46,721 INFO L87 Difference]: Start difference. First operand 45 states and 68 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,725 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2021-03-11 15:59:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 15:59:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,726 INFO L225 Difference]: With dead ends: 45 [2021-03-11 15:59:46,726 INFO L226 Difference]: Without dead ends: 45 [2021-03-11 15:59:46,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 15:59:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-03-11 15:59:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-03-11 15:59:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 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) [2021-03-11 15:59:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2021-03-11 15:59:46,729 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 67 transitions. Word has length 20 [2021-03-11 15:59:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,730 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 67 transitions. [2021-03-11 15:59:46,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 67 transitions. [2021-03-11 15:59:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-11 15:59:46,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:59:46,730 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:59:46,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:59:46,730 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:59:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:59:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1852720989, now seen corresponding path program 7 times [2021-03-11 15:59:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:59:46,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590662750] [2021-03-11 15:59:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:59:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:59:46,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 15:59:46,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 15:59:46,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:59:46,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 15:59:46,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:59:46,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:59:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:59:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590662750] [2021-03-11 15:59:46,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:59:46,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 15:59:46,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565249480] [2021-03-11 15:59:46,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 15:59:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:59:46,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 15:59:46,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 15:59:46,829 INFO L87 Difference]: Start difference. First operand 45 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:59:46,885 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2021-03-11 15:59:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 15:59:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) Word has length 20 [2021-03-11 15:59:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:59:46,886 INFO L225 Difference]: With dead ends: 33 [2021-03-11 15:59:46,886 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:59:46,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 72.4ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-11 15:59:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:59:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:59:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-03-11 15:59:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:59:46,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-03-11 15:59:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:59:46,887 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:59:46,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-03-11 15:59:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:59:46,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:59:46,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 15:59:46,889 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:59:46 BasicIcfg [2021-03-11 15:59:46,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:59:46,890 INFO L168 Benchmark]: Toolchain (without parser) took 1639.81 ms. Allocated memory is still 348.1 MB. Free memory was 328.5 MB in the beginning and 231.8 MB in the end (delta: 96.7 MB). Peak memory consumption was 95.9 MB. Max. memory is 16.0 GB. [2021-03-11 15:59:46,890 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.7 MB in the beginning and 329.6 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:59:46,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.72 ms. Allocated memory is still 348.1 MB. Free memory was 328.0 MB in the beginning and 326.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:59:46,890 INFO L168 Benchmark]: Boogie Preprocessor took 8.93 ms. Allocated memory is still 348.1 MB. Free memory was 326.6 MB in the beginning and 325.7 MB in the end (delta: 858.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:59:46,891 INFO L168 Benchmark]: RCFGBuilder took 171.55 ms. Allocated memory is still 348.1 MB. Free memory was 325.6 MB in the beginning and 314.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:59:46,891 INFO L168 Benchmark]: TraceAbstraction took 1435.14 ms. Allocated memory is still 348.1 MB. Free memory was 314.1 MB in the beginning and 231.8 MB in the end (delta: 82.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.0 GB. [2021-03-11 15:59:46,892 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 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.7 MB in the beginning and 329.6 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.72 ms. Allocated memory is still 348.1 MB. Free memory was 328.0 MB in the beginning and 326.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.93 ms. Allocated memory is still 348.1 MB. Free memory was 326.6 MB in the beginning and 325.7 MB in the end (delta: 858.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 171.55 ms. Allocated memory is still 348.1 MB. Free memory was 325.6 MB in the beginning and 314.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1435.14 ms. Allocated memory is still 348.1 MB. Free memory was 314.1 MB in the beginning and 231.8 MB in the end (delta: 82.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 305.0ms, 38 PlacesBefore, 30 PlacesAfterwards, 31 TransitionsBefore, 23 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 738 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 398, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 196, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 196, positive: 151, positive conditional: 0, positive unconditional: 151, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 398, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 196, unknown conditional: 0, unknown unconditional: 196] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1382.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 383.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 334.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 182 SDtfs, 203 SDslu, 368 SDs, 0 SdLazy, 208 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 302.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=2, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.8ms SsaConstructionTime, 60.3ms SatisfiabilityAnalysisTime, 431.3ms InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...