/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:44:36,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:44:36,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:44:36,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:44:36,859 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-NoLbe.epf [2021-07-09 17:44:36,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:44:36,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:44:36,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:44:36,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:44:36,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:44:36,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:44:36,898 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:44:36,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:44:36,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:44:36,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:44:36,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:44:36,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:44:36,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:44:36,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:44:36,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:44:36,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:44:36,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:44:37,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:44:37,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:44:37,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:44:37,217 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:44:37,219 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:44:37,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-07-09 17:44:37,220 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-07-09 17:44:37,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:44:37,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:44:37,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:44:37,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:44:37,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:44:37,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:44:37,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:44:37,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:44:37,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:44:37,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/1) ... [2021-07-09 17:44:37,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:44:37,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:44:37,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:44:37,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:44:37,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (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 [2021-07-09 17:44:37,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:44:37,379 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:44:37,379 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:44:37,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:44:37,381 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:44:37,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:44:37,557 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:44:37,558 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:44:37 BoogieIcfgContainer [2021-07-09 17:44:37,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:44:37,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:44:37,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:44:37,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:44:37,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:37" (1/2) ... [2021-07-09 17:44:37,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df3ae56 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:44:37, skipping insertion in model container [2021-07-09 17:44:37,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:44:37" (2/2) ... [2021-07-09 17:44:37,565 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-07-09 17:44:37,570 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:44:37,570 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:44:37,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:44:37,571 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:44:37,637 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 17:44:37,673 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 17:44:37,705 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:44:37,705 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:44:37,705 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:44:37,705 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:44:37,705 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:44:37,705 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:44:37,706 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:44:37,706 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:44:37,714 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-07-09 17:44:37,799 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 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) [2021-07-09 17:44:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 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) [2021-07-09 17:44:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:37,831 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:37,832 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:37,832 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1052757938, now seen corresponding path program 1 times [2021-07-09 17:44:37,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:37,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447954411] [2021-07-09 17:44:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:38,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:38,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447954411] [2021-07-09 17:44:38,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447954411] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:38,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:38,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:38,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516804992] [2021-07-09 17:44:38,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:38,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:38,136 INFO L87 Difference]: Start difference. First operand has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 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, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:38,359 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-07-09 17:44:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:44:38,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:38,384 INFO L225 Difference]: With dead ends: 998 [2021-07-09 17:44:38,384 INFO L226 Difference]: Without dead ends: 923 [2021-07-09 17:44:38,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:44:38,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-07-09 17:44:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-07-09 17:44:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 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) [2021-07-09 17:44:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-07-09 17:44:38,484 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-07-09 17:44:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:38,485 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-07-09 17:44:38,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-07-09 17:44:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:38,489 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:38,489 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:38,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:44:38,490 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1374757314, now seen corresponding path program 2 times [2021-07-09 17:44:38,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:38,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461427532] [2021-07-09 17:44:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:38,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:38,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461427532] [2021-07-09 17:44:38,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461427532] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:38,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:38,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:38,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297832867] [2021-07-09 17:44:38,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:38,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:38,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:38,630 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:38,733 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-07-09 17:44:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:38,739 INFO L225 Difference]: With dead ends: 1384 [2021-07-09 17:44:38,740 INFO L226 Difference]: Without dead ends: 1324 [2021-07-09 17:44:38,740 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 72.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:44:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-07-09 17:44:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-07-09 17:44:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 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) [2021-07-09 17:44:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-07-09 17:44:38,766 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-07-09 17:44:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:38,767 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-07-09 17:44:38,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-07-09 17:44:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:38,770 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:38,770 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:38,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:44:38,771 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 3 times [2021-07-09 17:44:38,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:38,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620157845] [2021-07-09 17:44:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:38,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:38,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620157845] [2021-07-09 17:44:38,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620157845] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:38,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:38,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:44:38,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708770128] [2021-07-09 17:44:38,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:44:38,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:38,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:44:38,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:38,797 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:38,804 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2021-07-09 17:44:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:44:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:38,808 INFO L225 Difference]: With dead ends: 711 [2021-07-09 17:44:38,808 INFO L226 Difference]: Without dead ends: 711 [2021-07-09 17:44:38,808 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-07-09 17:44:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-07-09 17:44:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 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) [2021-07-09 17:44:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2021-07-09 17:44:38,828 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2021-07-09 17:44:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:38,828 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2021-07-09 17:44:38,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-07-09 17:44:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2021-07-09 17:44:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:38,830 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:38,831 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:38,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:44:38,831 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 4 times [2021-07-09 17:44:38,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:38,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124722693] [2021-07-09 17:44:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:38,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:38,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124722693] [2021-07-09 17:44:38,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124722693] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:38,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:38,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:38,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797003018] [2021-07-09 17:44:38,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:38,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:38,936 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:39,102 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2021-07-09 17:44:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:44:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:39,107 INFO L225 Difference]: With dead ends: 1037 [2021-07-09 17:44:39,107 INFO L226 Difference]: Without dead ends: 946 [2021-07-09 17:44:39,108 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:44:39,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-07-09 17:44:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2021-07-09 17:44:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 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) [2021-07-09 17:44:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2021-07-09 17:44:39,132 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2021-07-09 17:44:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:39,133 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2021-07-09 17:44:39,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2021-07-09 17:44:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:39,135 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:39,135 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:39,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:44:39,135 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 5 times [2021-07-09 17:44:39,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:39,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893115043] [2021-07-09 17:44:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:39,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:39,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893115043] [2021-07-09 17:44:39,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893115043] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:39,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:39,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:39,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132582362] [2021-07-09 17:44:39,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:39,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:39,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:39,258 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:39,431 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2021-07-09 17:44:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:44:39,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:39,439 INFO L225 Difference]: With dead ends: 1727 [2021-07-09 17:44:39,439 INFO L226 Difference]: Without dead ends: 1715 [2021-07-09 17:44:39,440 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-07-09 17:44:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2021-07-09 17:44:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 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) [2021-07-09 17:44:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2021-07-09 17:44:39,466 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2021-07-09 17:44:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:39,467 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2021-07-09 17:44:39,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2021-07-09 17:44:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:39,469 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:39,469 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:39,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:44:39,469 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 6 times [2021-07-09 17:44:39,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:39,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756786685] [2021-07-09 17:44:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:39,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:39,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756786685] [2021-07-09 17:44:39,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756786685] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:39,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:39,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:39,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110058139] [2021-07-09 17:44:39,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:39,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:39,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:39,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:39,605 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:39,741 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2021-07-09 17:44:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:44:39,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:39,749 INFO L225 Difference]: With dead ends: 1666 [2021-07-09 17:44:39,749 INFO L226 Difference]: Without dead ends: 1638 [2021-07-09 17:44:39,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-07-09 17:44:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2021-07-09 17:44:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 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) [2021-07-09 17:44:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2021-07-09 17:44:39,776 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2021-07-09 17:44:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:39,777 INFO L482 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2021-07-09 17:44:39,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2021-07-09 17:44:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:39,779 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:39,779 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:39,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:44:39,779 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 7 times [2021-07-09 17:44:39,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:39,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118937177] [2021-07-09 17:44:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:39,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:39,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118937177] [2021-07-09 17:44:39,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118937177] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:39,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:39,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:39,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466858396] [2021-07-09 17:44:39,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:39,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:39,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:39,852 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:39,989 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2021-07-09 17:44:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:44:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:39,997 INFO L225 Difference]: With dead ends: 1712 [2021-07-09 17:44:39,997 INFO L226 Difference]: Without dead ends: 1700 [2021-07-09 17:44:39,997 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-07-09 17:44:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2021-07-09 17:44:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 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) [2021-07-09 17:44:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2021-07-09 17:44:40,024 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2021-07-09 17:44:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,024 INFO L482 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2021-07-09 17:44:40,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2021-07-09 17:44:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,027 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:44:40,027 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 8 times [2021-07-09 17:44:40,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141046078] [2021-07-09 17:44:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141046078] [2021-07-09 17:44:40,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141046078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:40,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711625732] [2021-07-09 17:44:40,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:40,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:40,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:40,092 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:40,225 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2021-07-09 17:44:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:44:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:40,232 INFO L225 Difference]: With dead ends: 1651 [2021-07-09 17:44:40,232 INFO L226 Difference]: Without dead ends: 1627 [2021-07-09 17:44:40,233 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:40,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-07-09 17:44:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2021-07-09 17:44:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 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) [2021-07-09 17:44:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2021-07-09 17:44:40,257 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2021-07-09 17:44:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,257 INFO L482 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2021-07-09 17:44:40,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2021-07-09 17:44:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,259 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,259 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:44:40,260 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 9 times [2021-07-09 17:44:40,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300580600] [2021-07-09 17:44:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300580600] [2021-07-09 17:44:40,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300580600] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:44:40,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547844036] [2021-07-09 17:44:40,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:44:40,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:44:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:40,290 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:40,296 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2021-07-09 17:44:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:44:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:40,300 INFO L225 Difference]: With dead ends: 790 [2021-07-09 17:44:40,300 INFO L226 Difference]: Without dead ends: 780 [2021-07-09 17:44:40,300 INFO L764 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 [2021-07-09 17:44:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-07-09 17:44:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-07-09 17:44:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 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) [2021-07-09 17:44:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2021-07-09 17:44:40,322 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2021-07-09 17:44:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,322 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2021-07-09 17:44:40,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2021-07-09 17:44:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,324 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,324 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:44:40,325 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1217857452, now seen corresponding path program 10 times [2021-07-09 17:44:40,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969447127] [2021-07-09 17:44:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969447127] [2021-07-09 17:44:40,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969447127] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:40,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368509146] [2021-07-09 17:44:40,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:40,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:40,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:40,362 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:40,499 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2021-07-09 17:44:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 17:44:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:40,504 INFO L225 Difference]: With dead ends: 1251 [2021-07-09 17:44:40,504 INFO L226 Difference]: Without dead ends: 1065 [2021-07-09 17:44:40,504 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-07-09 17:44:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2021-07-09 17:44:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 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) [2021-07-09 17:44:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2021-07-09 17:44:40,524 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2021-07-09 17:44:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,524 INFO L482 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2021-07-09 17:44:40,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2021-07-09 17:44:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,526 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,526 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:44:40,527 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1007461460, now seen corresponding path program 11 times [2021-07-09 17:44:40,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584322231] [2021-07-09 17:44:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584322231] [2021-07-09 17:44:40,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584322231] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:40,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272195989] [2021-07-09 17:44:40,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:40,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:40,561 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:40,690 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2021-07-09 17:44:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:44:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:40,695 INFO L225 Difference]: With dead ends: 1179 [2021-07-09 17:44:40,695 INFO L226 Difference]: Without dead ends: 1051 [2021-07-09 17:44:40,696 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-07-09 17:44:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2021-07-09 17:44:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 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) [2021-07-09 17:44:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2021-07-09 17:44:40,714 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2021-07-09 17:44:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,714 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2021-07-09 17:44:40,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2021-07-09 17:44:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,717 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,717 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:44:40,717 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1643488946, now seen corresponding path program 12 times [2021-07-09 17:44:40,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597292967] [2021-07-09 17:44:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597292967] [2021-07-09 17:44:40,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597292967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107699108] [2021-07-09 17:44:40,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:40,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:40,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:40,751 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:40,856 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2021-07-09 17:44:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:44:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:40,861 INFO L225 Difference]: With dead ends: 1124 [2021-07-09 17:44:40,861 INFO L226 Difference]: Without dead ends: 934 [2021-07-09 17:44:40,861 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:44:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-07-09 17:44:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2021-07-09 17:44:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 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) [2021-07-09 17:44:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2021-07-09 17:44:40,879 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2021-07-09 17:44:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:40,879 INFO L482 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2021-07-09 17:44:40,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2021-07-09 17:44:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:40,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:40,881 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:40,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:44:40,882 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 13 times [2021-07-09 17:44:40,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:40,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729455091] [2021-07-09 17:44:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729455091] [2021-07-09 17:44:40,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729455091] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:40,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962912463] [2021-07-09 17:44:40,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:40,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:40,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:40,916 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,048 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2021-07-09 17:44:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 17:44:41,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,052 INFO L225 Difference]: With dead ends: 1116 [2021-07-09 17:44:41,052 INFO L226 Difference]: Without dead ends: 1017 [2021-07-09 17:44:41,053 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-07-09 17:44:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2021-07-09 17:44:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 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) [2021-07-09 17:44:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2021-07-09 17:44:41,074 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2021-07-09 17:44:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:41,076 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2021-07-09 17:44:41,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2021-07-09 17:44:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:41,078 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:41,079 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:41,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:44:41,079 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1290670540, now seen corresponding path program 14 times [2021-07-09 17:44:41,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:41,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749233882] [2021-07-09 17:44:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:41,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:41,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749233882] [2021-07-09 17:44:41,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749233882] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:41,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:41,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:41,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496176955] [2021-07-09 17:44:41,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:41,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:41,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:41,111 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,236 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2021-07-09 17:44:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:44:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,241 INFO L225 Difference]: With dead ends: 1108 [2021-07-09 17:44:41,241 INFO L226 Difference]: Without dead ends: 994 [2021-07-09 17:44:41,241 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-07-09 17:44:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2021-07-09 17:44:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 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) [2021-07-09 17:44:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2021-07-09 17:44:41,259 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2021-07-09 17:44:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:41,259 INFO L482 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2021-07-09 17:44:41,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2021-07-09 17:44:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:41,261 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:41,261 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:41,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:44:41,262 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash 43920790, now seen corresponding path program 15 times [2021-07-09 17:44:41,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:41,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241268946] [2021-07-09 17:44:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:41,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:41,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241268946] [2021-07-09 17:44:41,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241268946] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:41,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:41,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:41,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070323009] [2021-07-09 17:44:41,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:41,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:41,318 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,410 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2021-07-09 17:44:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:44:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,423 INFO L225 Difference]: With dead ends: 1089 [2021-07-09 17:44:41,423 INFO L226 Difference]: Without dead ends: 918 [2021-07-09 17:44:41,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:44:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-07-09 17:44:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2021-07-09 17:44:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 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) [2021-07-09 17:44:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2021-07-09 17:44:41,439 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2021-07-09 17:44:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:41,439 INFO L482 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2021-07-09 17:44:41,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2021-07-09 17:44:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:41,441 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:41,441 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:41,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:44:41,441 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:41,441 INFO L82 PathProgramCache]: Analyzing trace with hash 736847136, now seen corresponding path program 16 times [2021-07-09 17:44:41,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:41,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992769210] [2021-07-09 17:44:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:41,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:41,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992769210] [2021-07-09 17:44:41,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992769210] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:41,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:41,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:41,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831398306] [2021-07-09 17:44:41,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:44:41,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:41,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:44:41,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:44:41,476 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,632 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2021-07-09 17:44:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 17:44:41,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,636 INFO L225 Difference]: With dead ends: 984 [2021-07-09 17:44:41,636 INFO L226 Difference]: Without dead ends: 893 [2021-07-09 17:44:41,637 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:44:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-07-09 17:44:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2021-07-09 17:44:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 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) [2021-07-09 17:44:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2021-07-09 17:44:41,651 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2021-07-09 17:44:41,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:41,651 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2021-07-09 17:44:41,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2021-07-09 17:44:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:41,653 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:41,653 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:41,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:44:41,653 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1332801248, now seen corresponding path program 17 times [2021-07-09 17:44:41,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:41,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102464769] [2021-07-09 17:44:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:41,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:41,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102464769] [2021-07-09 17:44:41,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102464769] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:41,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:41,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:41,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362120939] [2021-07-09 17:44:41,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:41,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:41,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:41,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:41,686 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,825 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2021-07-09 17:44:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-09 17:44:41,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,829 INFO L225 Difference]: With dead ends: 1072 [2021-07-09 17:44:41,830 INFO L226 Difference]: Without dead ends: 1004 [2021-07-09 17:44:41,830 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 72.9ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-07-09 17:44:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2021-07-09 17:44:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 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) [2021-07-09 17:44:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2021-07-09 17:44:41,845 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2021-07-09 17:44:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:41,845 INFO L482 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2021-07-09 17:44:41,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2021-07-09 17:44:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:41,847 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:41,847 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:41,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:44:41,847 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash -696773762, now seen corresponding path program 18 times [2021-07-09 17:44:41,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:41,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49307129] [2021-07-09 17:44:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:41,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:41,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49307129] [2021-07-09 17:44:41,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49307129] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:41,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:41,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:41,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606089612] [2021-07-09 17:44:41,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:41,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:41,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:41,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:41,876 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,032 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2021-07-09 17:44:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:44:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,035 INFO L225 Difference]: With dead ends: 941 [2021-07-09 17:44:42,035 INFO L226 Difference]: Without dead ends: 787 [2021-07-09 17:44:42,036 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-07-09 17:44:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2021-07-09 17:44:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 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) [2021-07-09 17:44:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2021-07-09 17:44:42,051 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2021-07-09 17:44:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,051 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2021-07-09 17:44:42,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2021-07-09 17:44:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,052 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,052 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:44:42,053 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2136622238, now seen corresponding path program 19 times [2021-07-09 17:44:42,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363580273] [2021-07-09 17:44:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363580273] [2021-07-09 17:44:42,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363580273] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:42,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263268037] [2021-07-09 17:44:42,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:42,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:42,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:42,092 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,225 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2021-07-09 17:44:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:44:42,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,227 INFO L225 Difference]: With dead ends: 855 [2021-07-09 17:44:42,227 INFO L226 Difference]: Without dead ends: 722 [2021-07-09 17:44:42,227 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:44:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-07-09 17:44:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2021-07-09 17:44:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 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) [2021-07-09 17:44:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2021-07-09 17:44:42,241 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2021-07-09 17:44:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,241 INFO L482 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2021-07-09 17:44:42,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2021-07-09 17:44:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,243 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,243 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:44:42,243 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1263811414, now seen corresponding path program 20 times [2021-07-09 17:44:42,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269296546] [2021-07-09 17:44:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269296546] [2021-07-09 17:44:42,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269296546] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:42,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020819852] [2021-07-09 17:44:42,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:44:42,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:44:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:44:42,279 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,418 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2021-07-09 17:44:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:44:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,420 INFO L225 Difference]: With dead ends: 810 [2021-07-09 17:44:42,420 INFO L226 Difference]: Without dead ends: 761 [2021-07-09 17:44:42,420 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:44:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-07-09 17:44:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2021-07-09 17:44:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 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) [2021-07-09 17:44:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2021-07-09 17:44:42,432 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2021-07-09 17:44:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,433 INFO L482 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2021-07-09 17:44:42,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2021-07-09 17:44:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,434 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:44:42,434 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1230694522, now seen corresponding path program 21 times [2021-07-09 17:44:42,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624931980] [2021-07-09 17:44:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624931980] [2021-07-09 17:44:42,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624931980] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:42,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875773573] [2021-07-09 17:44:42,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:42,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:42,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:42,462 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,533 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2021-07-09 17:44:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,535 INFO L225 Difference]: With dead ends: 760 [2021-07-09 17:44:42,535 INFO L226 Difference]: Without dead ends: 588 [2021-07-09 17:44:42,535 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:44:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-07-09 17:44:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-07-09 17:44:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 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) [2021-07-09 17:44:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-07-09 17:44:42,545 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-07-09 17:44:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,546 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-07-09 17:44:42,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-07-09 17:44:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,547 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,547 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:44:42,547 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 22 times [2021-07-09 17:44:42,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209371817] [2021-07-09 17:44:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209371817] [2021-07-09 17:44:42,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209371817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:42,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580534498] [2021-07-09 17:44:42,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:44:42,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:44:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:44:42,581 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,721 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-07-09 17:44:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 17:44:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,723 INFO L225 Difference]: With dead ends: 699 [2021-07-09 17:44:42,723 INFO L226 Difference]: Without dead ends: 598 [2021-07-09 17:44:42,723 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:44:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-07-09 17:44:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-07-09 17:44:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 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) [2021-07-09 17:44:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-07-09 17:44:42,738 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-07-09 17:44:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,738 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-07-09 17:44:42,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-07-09 17:44:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,739 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,740 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 17:44:42,740 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 23 times [2021-07-09 17:44:42,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033195569] [2021-07-09 17:44:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033195569] [2021-07-09 17:44:42,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033195569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:42,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394694130] [2021-07-09 17:44:42,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:44:42,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:44:42,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:44:42,801 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:42,923 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-07-09 17:44:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:44:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:42,925 INFO L225 Difference]: With dead ends: 598 [2021-07-09 17:44:42,925 INFO L226 Difference]: Without dead ends: 546 [2021-07-09 17:44:42,925 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:44:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-07-09 17:44:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-07-09 17:44:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 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) [2021-07-09 17:44:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-07-09 17:44:42,935 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-07-09 17:44:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,935 INFO L482 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-07-09 17:44:42,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-07-09 17:44:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:42,936 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,936 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 17:44:42,936 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 24 times [2021-07-09 17:44:42,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344415828] [2021-07-09 17:44:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344415828] [2021-07-09 17:44:42,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344415828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:44:42,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137332370] [2021-07-09 17:44:42,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:42,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:42,975 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,032 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-07-09 17:44:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,033 INFO L225 Difference]: With dead ends: 542 [2021-07-09 17:44:43,033 INFO L226 Difference]: Without dead ends: 381 [2021-07-09 17:44:43,033 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:44:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-07-09 17:44:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-07-09 17:44:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 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) [2021-07-09 17:44:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-07-09 17:44:43,039 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-07-09 17:44:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,040 INFO L482 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-07-09 17:44:43,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-07-09 17:44:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:43,040 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:43,041 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:43,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 17:44:43,041 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 25 times [2021-07-09 17:44:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:43,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369291688] [2021-07-09 17:44:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:43,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:43,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369291688] [2021-07-09 17:44:43,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369291688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:43,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:43,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:43,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552885183] [2021-07-09 17:44:43,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:43,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:43,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:43,117 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,205 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-07-09 17:44:43,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:43,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,206 INFO L225 Difference]: With dead ends: 452 [2021-07-09 17:44:43,207 INFO L226 Difference]: Without dead ends: 432 [2021-07-09 17:44:43,208 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-07-09 17:44:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-07-09 17:44:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 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) [2021-07-09 17:44:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-07-09 17:44:43,214 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-07-09 17:44:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,215 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-07-09 17:44:43,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-07-09 17:44:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:43,217 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:43,217 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:43,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 17:44:43,217 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 26 times [2021-07-09 17:44:43,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:43,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285146539] [2021-07-09 17:44:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:43,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:43,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285146539] [2021-07-09 17:44:43,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285146539] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:43,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:43,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:43,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772405807] [2021-07-09 17:44:43,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:43,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:43,278 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,362 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-07-09 17:44:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,364 INFO L225 Difference]: With dead ends: 397 [2021-07-09 17:44:43,364 INFO L226 Difference]: Without dead ends: 332 [2021-07-09 17:44:43,364 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:43,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-07-09 17:44:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-07-09 17:44:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 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) [2021-07-09 17:44:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-07-09 17:44:43,370 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-07-09 17:44:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,370 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-07-09 17:44:43,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,370 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-07-09 17:44:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:43,371 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:43,371 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:43,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 17:44:43,371 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:43,372 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 27 times [2021-07-09 17:44:43,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:43,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730042866] [2021-07-09 17:44:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:43,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:43,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730042866] [2021-07-09 17:44:43,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730042866] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:43,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:43,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:43,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799859167] [2021-07-09 17:44:43,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:43,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:43,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:43,426 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,513 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-07-09 17:44:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,515 INFO L225 Difference]: With dead ends: 472 [2021-07-09 17:44:43,515 INFO L226 Difference]: Without dead ends: 452 [2021-07-09 17:44:43,515 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-07-09 17:44:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-07-09 17:44:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 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) [2021-07-09 17:44:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-07-09 17:44:43,522 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-07-09 17:44:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,522 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-07-09 17:44:43,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-07-09 17:44:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:43,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:43,523 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:43,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 17:44:43,523 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 28 times [2021-07-09 17:44:43,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:43,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689640725] [2021-07-09 17:44:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:43,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:43,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689640725] [2021-07-09 17:44:43,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689640725] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:43,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:43,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:44:43,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272452460] [2021-07-09 17:44:43,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:44:43,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:43,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:44:43,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:44:43,582 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,655 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-07-09 17:44:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:44:43,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,656 INFO L225 Difference]: With dead ends: 397 [2021-07-09 17:44:43,657 INFO L226 Difference]: Without dead ends: 327 [2021-07-09 17:44:43,657 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:44:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-07-09 17:44:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-07-09 17:44:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 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) [2021-07-09 17:44:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-07-09 17:44:43,662 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-07-09 17:44:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,662 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-07-09 17:44:43,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-07-09 17:44:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 17:44:43,663 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:43,663 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:43,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 17:44:43,663 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:44:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:43,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 29 times [2021-07-09 17:44:43,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:43,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615411157] [2021-07-09 17:44:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:43,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:43,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615411157] [2021-07-09 17:44:43,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615411157] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:43,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:43,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:44:43,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788605555] [2021-07-09 17:44:43,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:44:43,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:44:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:44:43,694 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,729 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-07-09 17:44:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:44:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-07-09 17:44:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,730 INFO L225 Difference]: With dead ends: 189 [2021-07-09 17:44:43,730 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 17:44:43,730 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:44:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 17:44:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 17:44:43,731 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) [2021-07-09 17:44:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 17:44:43,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-07-09 17:44:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:43,731 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 17:44:43,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-07-09 17:44:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 17:44:43,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 17:44:43,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 17:44:43,733 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 17:44:43,735 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 05:44:43 BasicIcfg [2021-07-09 17:44:43,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 17:44:43,736 INFO L168 Benchmark]: Toolchain (without parser) took 6475.84 ms. Allocated memory was 197.1 MB in the beginning and 331.4 MB in the end (delta: 134.2 MB). Free memory was 177.0 MB in the beginning and 262.3 MB in the end (delta: -85.3 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2021-07-09 17:44:43,736 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 197.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:44:43,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.22 ms. Allocated memory is still 197.1 MB. Free memory was 176.9 MB in the beginning and 175.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:44:43,736 INFO L168 Benchmark]: Boogie Preprocessor took 13.92 ms. Allocated memory is still 197.1 MB. Free memory was 175.4 MB in the beginning and 174.5 MB in the end (delta: 905.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:44:43,736 INFO L168 Benchmark]: RCFGBuilder took 254.99 ms. Allocated memory is still 197.1 MB. Free memory was 174.4 MB in the beginning and 162.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 17:44:43,736 INFO L168 Benchmark]: TraceAbstraction took 6175.15 ms. Allocated memory was 197.1 MB in the beginning and 331.4 MB in the end (delta: 134.2 MB). Free memory was 161.7 MB in the beginning and 262.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:44:43,737 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 197.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.22 ms. Allocated memory is still 197.1 MB. Free memory was 176.9 MB in the beginning and 175.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.92 ms. Allocated memory is still 197.1 MB. Free memory was 175.4 MB in the beginning and 174.5 MB in the end (delta: 905.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 254.99 ms. Allocated memory is still 197.1 MB. Free memory was 174.4 MB in the beginning and 162.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6175.15 ms. Allocated memory was 197.1 MB in the beginning and 331.4 MB in the end (delta: 134.2 MB). Free memory was 161.7 MB in the beginning and 262.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: 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, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6029.0ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 76.6ms, AutomataDifference: 3472.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 93.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2558 SDtfs, 3307 SDslu, 8635 SDs, 0 SdLazy, 3072 SolverSat, 357 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1253.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2019.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 525.1ms AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.9ms SsaConstructionTime, 169.2ms SatisfiabilityAnalysisTime, 1386.6ms InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3673 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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...