/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/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:50:29,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:50:29,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:50:29,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 18:50:29,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 18:50:29,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 18:50:29,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 18:50:29,775 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 [2021-08-12 18:50:29,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:50:29,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:50:29,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:50:29,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:50:29,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:50:29,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:50:29,795 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:50:29,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:50:29,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:50:29,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:50:29,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:50:29,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:50:29,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:50:29,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:50:29,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:50:29,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:50:29,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:50:29,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:50:29,799 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:50:29,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:50:29,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:50:30,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:50:30,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:50:30,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:50:30,095 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 18:50:30,096 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 18:50:30,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2021-08-12 18:50:30,097 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2021-08-12 18:50:30,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:50:30,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 18:50:30,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:50:30,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:50:30,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:50:30,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:50:30,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:50:30,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:50:30,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:50:30,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/1) ... [2021-08-12 18:50:30,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:50:30,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:50:30,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:50:30,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:50:30,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (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 [2021-08-12 18:50:30,258 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-12 18:50:30,258 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-12 18:50:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-12 18:50:30,259 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-12 18:50:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-12 18:50:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-12 18:50:30,259 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-12 18:50:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-12 18:50:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-12 18:50:30,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-12 18:50:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-12 18:50:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-12 18:50:30,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-12 18:50:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-12 18:50:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-12 18:50:30,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 18:50:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:50:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:50:30,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-12 18:50:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-12 18:50:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-12 18:50:30,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-12 18:50:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-12 18:50:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-12 18:50:30,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-08-12 18:50:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-08-12 18:50:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-08-12 18:50:30,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 18:50:30,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:50:30,425 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 18:50:30,426 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:50:30 BoogieIcfgContainer [2021-08-12 18:50:30,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:50:30,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:50:30,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:50:30,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:50:30,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:50:30" (1/2) ... [2021-08-12 18:50:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d74540 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:50:30, skipping insertion in model container [2021-08-12 18:50:30,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:50:30" (2/2) ... [2021-08-12 18:50:30,431 INFO L111 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2021-08-12 18:50:30,435 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:50:30,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:50:30,436 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:50:30,575 INFO L149 ThreadInstanceAdder]: Constructed 64 joinOtherThreadTransitions. [2021-08-12 18:50:30,591 INFO L255 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-08-12 18:50:30,606 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:50:30,606 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:50:30,607 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:50:30,607 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:50:30,607 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:50:30,607 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:50:30,607 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:50:30,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:50:30,615 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 99 transitions, 430 flow [2021-08-12 18:50:41,923 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 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) [2021-08-12 18:50:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 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) [2021-08-12 18:50:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:50:42,806 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:42,807 INFO L550 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] [2021-08-12 18:50:42,808 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:50:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:42,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1841314055, now seen corresponding path program 1 times [2021-08-12 18:50:42,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:42,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879280811] [2021-08-12 18:50:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:42,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:42,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879280811] [2021-08-12 18:50:42,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879280811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:42,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:42,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:50:42,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448586710] [2021-08-12 18:50:42,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:50:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:50:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:50:43,109 INFO L87 Difference]: Start difference. First operand has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 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 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:50:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:45,076 INFO L93 Difference]: Finished difference Result 83019 states and 481425 transitions. [2021-08-12 18:50:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:50:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:50:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:45,898 INFO L225 Difference]: With dead ends: 83019 [2021-08-12 18:50:45,899 INFO L226 Difference]: Without dead ends: 66630 [2021-08-12 18:50:45,943 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:50:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66630 states. [2021-08-12 18:50:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66630 to 66630. [2021-08-12 18:50:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66630 states, 66629 states have (on average 5.901589398009875) internal successors, (393217), 66629 states have internal predecessors, (393217), 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) [2021-08-12 18:50:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66630 states to 66630 states and 393217 transitions. [2021-08-12 18:50:51,008 INFO L78 Accepts]: Start accepts. Automaton has 66630 states and 393217 transitions. Word has length 33 [2021-08-12 18:50:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:51,012 INFO L482 AbstractCegarLoop]: Abstraction has 66630 states and 393217 transitions. [2021-08-12 18:50:51,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:50:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66630 states and 393217 transitions. [2021-08-12 18:50:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:50:51,282 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:51,282 INFO L550 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] [2021-08-12 18:50:51,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:50:51,283 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:50:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1230509281, now seen corresponding path program 1 times [2021-08-12 18:50:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:51,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230889908] [2021-08-12 18:50:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:51,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:51,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230889908] [2021-08-12 18:50:51,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230889908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:51,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:51,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:50:51,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253890903] [2021-08-12 18:50:51,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:50:51,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:51,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:50:51,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:50:51,322 INFO L87 Difference]: Start difference. First operand 66630 states and 393217 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:50:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:52,858 INFO L93 Difference]: Finished difference Result 75725 states and 433307 transitions. [2021-08-12 18:50:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:50:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:50:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:53,437 INFO L225 Difference]: With dead ends: 75725 [2021-08-12 18:50:53,437 INFO L226 Difference]: Without dead ends: 59340 [2021-08-12 18:50:53,480 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:50:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59340 states. [2021-08-12 18:50:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59340 to 59340. [2021-08-12 18:50:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59340 states, 59339 states have (on average 5.74207519506564) internal successors, (340729), 59339 states have internal predecessors, (340729), 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) [2021-08-12 18:50:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59340 states to 59340 states and 340729 transitions. [2021-08-12 18:50:57,524 INFO L78 Accepts]: Start accepts. Automaton has 59340 states and 340729 transitions. Word has length 33 [2021-08-12 18:50:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:57,525 INFO L482 AbstractCegarLoop]: Abstraction has 59340 states and 340729 transitions. [2021-08-12 18:50:57,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:50:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 59340 states and 340729 transitions. [2021-08-12 18:50:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:50:57,715 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:57,716 INFO L550 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] [2021-08-12 18:50:57,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:50:57,716 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:50:57,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:57,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1462759847, now seen corresponding path program 1 times [2021-08-12 18:50:57,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:57,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680671549] [2021-08-12 18:50:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:57,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:57,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680671549] [2021-08-12 18:50:57,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680671549] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:57,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:57,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:50:57,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802590824] [2021-08-12 18:50:57,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:50:57,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:50:57,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:50:57,750 INFO L87 Difference]: Start difference. First operand 59340 states and 340729 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:50:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:59,082 INFO L93 Difference]: Finished difference Result 59363 states and 340751 transitions. [2021-08-12 18:50:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:50:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:50:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:59,428 INFO L225 Difference]: With dead ends: 59363 [2021-08-12 18:50:59,428 INFO L226 Difference]: Without dead ends: 43707 [2021-08-12 18:50:59,460 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43707 states. [2021-08-12 18:51:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43707 to 43707. [2021-08-12 18:51:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43707 states, 43706 states have (on average 5.6374639637578365) internal successors, (246391), 43706 states have internal predecessors, (246391), 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) [2021-08-12 18:51:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43707 states to 43707 states and 246391 transitions. [2021-08-12 18:51:02,726 INFO L78 Accepts]: Start accepts. Automaton has 43707 states and 246391 transitions. Word has length 33 [2021-08-12 18:51:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:02,727 INFO L482 AbstractCegarLoop]: Abstraction has 43707 states and 246391 transitions. [2021-08-12 18:51:02,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 43707 states and 246391 transitions. [2021-08-12 18:51:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:02,842 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:02,843 INFO L550 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] [2021-08-12 18:51:02,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 18:51:02,843 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1828753721, now seen corresponding path program 1 times [2021-08-12 18:51:02,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:02,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577761607] [2021-08-12 18:51:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:02,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:02,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577761607] [2021-08-12 18:51:02,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577761607] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:02,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:02,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:51:02,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001035474] [2021-08-12 18:51:02,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:51:02,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:51:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:02,864 INFO L87 Difference]: Start difference. First operand 43707 states and 246391 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:03,858 INFO L93 Difference]: Finished difference Result 45809 states and 253541 transitions. [2021-08-12 18:51:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:51:03,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:04,050 INFO L225 Difference]: With dead ends: 45809 [2021-08-12 18:51:04,051 INFO L226 Difference]: Without dead ends: 34230 [2021-08-12 18:51:04,081 INFO L806 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 [2021-08-12 18:51:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34230 states. [2021-08-12 18:51:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34230 to 34230. [2021-08-12 18:51:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34230 states, 34229 states have (on average 5.473195243799117) internal successors, (187342), 34229 states have internal predecessors, (187342), 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) [2021-08-12 18:51:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 187342 transitions. [2021-08-12 18:51:06,342 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 187342 transitions. Word has length 33 [2021-08-12 18:51:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:06,343 INFO L482 AbstractCegarLoop]: Abstraction has 34230 states and 187342 transitions. [2021-08-12 18:51:06,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 187342 transitions. [2021-08-12 18:51:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:06,423 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:06,423 INFO L550 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] [2021-08-12 18:51:06,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 18:51:06,423 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1417363893, now seen corresponding path program 1 times [2021-08-12 18:51:06,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:06,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352798027] [2021-08-12 18:51:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:06,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:06,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352798027] [2021-08-12 18:51:06,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352798027] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:06,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:06,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:51:06,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856640305] [2021-08-12 18:51:06,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:51:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:51:06,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:06,443 INFO L87 Difference]: Start difference. First operand 34230 states and 187342 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:07,304 INFO L93 Difference]: Finished difference Result 34307 states and 187472 transitions. [2021-08-12 18:51:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:51:07,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:07,445 INFO L225 Difference]: With dead ends: 34307 [2021-08-12 18:51:07,445 INFO L226 Difference]: Without dead ends: 24672 [2021-08-12 18:51:07,466 INFO L806 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 [2021-08-12 18:51:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24672 states. [2021-08-12 18:51:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24672 to 24672. [2021-08-12 18:51:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24672 states, 24671 states have (on average 5.401524056584654) internal successors, (133261), 24671 states have internal predecessors, (133261), 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) [2021-08-12 18:51:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24672 states to 24672 states and 133261 transitions. [2021-08-12 18:51:09,184 INFO L78 Accepts]: Start accepts. Automaton has 24672 states and 133261 transitions. Word has length 33 [2021-08-12 18:51:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:09,184 INFO L482 AbstractCegarLoop]: Abstraction has 24672 states and 133261 transitions. [2021-08-12 18:51:09,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24672 states and 133261 transitions. [2021-08-12 18:51:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:09,243 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:09,244 INFO L550 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] [2021-08-12 18:51:09,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 18:51:09,244 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:09,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1862524909, now seen corresponding path program 1 times [2021-08-12 18:51:09,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:09,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705193194] [2021-08-12 18:51:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:09,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:09,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705193194] [2021-08-12 18:51:09,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705193194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:09,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:09,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:51:09,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158955517] [2021-08-12 18:51:09,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:51:09,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:09,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:51:09,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:09,259 INFO L87 Difference]: Start difference. First operand 24672 states and 133261 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:09,955 INFO L93 Difference]: Finished difference Result 24674 states and 133262 transitions. [2021-08-12 18:51:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:51:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:10,076 INFO L225 Difference]: With dead ends: 24674 [2021-08-12 18:51:10,077 INFO L226 Difference]: Without dead ends: 17820 [2021-08-12 18:51:10,089 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17820 states. [2021-08-12 18:51:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17820 to 17820. [2021-08-12 18:51:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17820 states, 17819 states have (on average 5.363993490094843) internal successors, (95581), 17819 states have internal predecessors, (95581), 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) [2021-08-12 18:51:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17820 states to 17820 states and 95581 transitions. [2021-08-12 18:51:11,408 INFO L78 Accepts]: Start accepts. Automaton has 17820 states and 95581 transitions. Word has length 33 [2021-08-12 18:51:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:11,408 INFO L482 AbstractCegarLoop]: Abstraction has 17820 states and 95581 transitions. [2021-08-12 18:51:11,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17820 states and 95581 transitions. [2021-08-12 18:51:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:11,445 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:11,446 INFO L550 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] [2021-08-12 18:51:11,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 18:51:11,446 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -757244133, now seen corresponding path program 1 times [2021-08-12 18:51:11,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:11,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400375428] [2021-08-12 18:51:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:11,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:11,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400375428] [2021-08-12 18:51:11,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400375428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:11,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:11,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:51:11,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036864774] [2021-08-12 18:51:11,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:51:11,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:51:11,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:11,472 INFO L87 Difference]: Start difference. First operand 17820 states and 95581 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:11,950 INFO L93 Difference]: Finished difference Result 17861 states and 95663 transitions. [2021-08-12 18:51:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:51:11,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:12,046 INFO L225 Difference]: With dead ends: 17861 [2021-08-12 18:51:12,046 INFO L226 Difference]: Without dead ends: 13122 [2021-08-12 18:51:12,056 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:51:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2021-08-12 18:51:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 13122. [2021-08-12 18:51:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13122 states, 13121 states have (on average 5.333816020120418) internal successors, (69985), 13121 states have internal predecessors, (69985), 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) [2021-08-12 18:51:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13122 states to 13122 states and 69985 transitions. [2021-08-12 18:51:13,174 INFO L78 Accepts]: Start accepts. Automaton has 13122 states and 69985 transitions. Word has length 33 [2021-08-12 18:51:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:13,175 INFO L482 AbstractCegarLoop]: Abstraction has 13122 states and 69985 transitions. [2021-08-12 18:51:13,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-12 18:51:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13122 states and 69985 transitions. [2021-08-12 18:51:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:13,207 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:13,207 INFO L550 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] [2021-08-12 18:51:13,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 18:51:13,207 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash 9427259, now seen corresponding path program 1 times [2021-08-12 18:51:13,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:13,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39954878] [2021-08-12 18:51:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:13,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:13,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39954878] [2021-08-12 18:51:13,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39954878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:13,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:13,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:13,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457706235] [2021-08-12 18:51:13,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:13,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:13,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:13,682 INFO L87 Difference]: Start difference. First operand 13122 states and 69985 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:15,524 INFO L93 Difference]: Finished difference Result 31786 states and 159983 transitions. [2021-08-12 18:51:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:15,694 INFO L225 Difference]: With dead ends: 31786 [2021-08-12 18:51:15,695 INFO L226 Difference]: Without dead ends: 31026 [2021-08-12 18:51:15,703 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 272.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31026 states. [2021-08-12 18:51:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31026 to 13439. [2021-08-12 18:51:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13439 states, 13438 states have (on average 5.328471498734931) internal successors, (71604), 13438 states have internal predecessors, (71604), 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) [2021-08-12 18:51:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 71604 transitions. [2021-08-12 18:51:17,120 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 71604 transitions. Word has length 33 [2021-08-12 18:51:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:17,121 INFO L482 AbstractCegarLoop]: Abstraction has 13439 states and 71604 transitions. [2021-08-12 18:51:17,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 71604 transitions. [2021-08-12 18:51:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:17,149 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:17,149 INFO L550 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] [2021-08-12 18:51:17,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 18:51:17,149 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash -837369703, now seen corresponding path program 2 times [2021-08-12 18:51:17,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:17,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161180503] [2021-08-12 18:51:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:17,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:17,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161180503] [2021-08-12 18:51:17,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161180503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:17,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:17,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:17,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409367181] [2021-08-12 18:51:17,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:17,354 INFO L87 Difference]: Start difference. First operand 13439 states and 71604 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:19,618 INFO L93 Difference]: Finished difference Result 31778 states and 159835 transitions. [2021-08-12 18:51:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:19,770 INFO L225 Difference]: With dead ends: 31778 [2021-08-12 18:51:19,770 INFO L226 Difference]: Without dead ends: 30906 [2021-08-12 18:51:19,780 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 194.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30906 states. [2021-08-12 18:51:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30906 to 13319. [2021-08-12 18:51:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 5.335035290584171) internal successors, (71052), 13318 states have internal predecessors, (71052), 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) [2021-08-12 18:51:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 71052 transitions. [2021-08-12 18:51:21,163 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 71052 transitions. Word has length 33 [2021-08-12 18:51:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:21,164 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 71052 transitions. [2021-08-12 18:51:21,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 71052 transitions. [2021-08-12 18:51:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:21,196 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:21,196 INFO L550 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] [2021-08-12 18:51:21,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 18:51:21,196 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1760821563, now seen corresponding path program 3 times [2021-08-12 18:51:21,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:21,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157537758] [2021-08-12 18:51:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:21,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:21,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157537758] [2021-08-12 18:51:21,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157537758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:21,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:21,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:21,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493921092] [2021-08-12 18:51:21,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:21,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:21,421 INFO L87 Difference]: Start difference. First operand 13319 states and 71052 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:23,898 INFO L93 Difference]: Finished difference Result 31997 states and 160882 transitions. [2021-08-12 18:51:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:24,066 INFO L225 Difference]: With dead ends: 31997 [2021-08-12 18:51:24,067 INFO L226 Difference]: Without dead ends: 31237 [2021-08-12 18:51:24,077 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 208.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31237 states. [2021-08-12 18:51:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31237 to 13507. [2021-08-12 18:51:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 13506 states have (on average 5.321782911298682) internal successors, (71876), 13506 states have internal predecessors, (71876), 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) [2021-08-12 18:51:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71876 transitions. [2021-08-12 18:51:25,593 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71876 transitions. Word has length 33 [2021-08-12 18:51:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:25,594 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71876 transitions. [2021-08-12 18:51:25,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71876 transitions. [2021-08-12 18:51:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:25,623 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:25,623 INFO L550 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] [2021-08-12 18:51:25,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 18:51:25,623 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash -146065093, now seen corresponding path program 4 times [2021-08-12 18:51:25,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:25,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814634044] [2021-08-12 18:51:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:25,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:25,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814634044] [2021-08-12 18:51:25,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814634044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:25,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:25,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:25,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746806471] [2021-08-12 18:51:25,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:25,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:25,846 INFO L87 Difference]: Start difference. First operand 13507 states and 71876 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:28,672 INFO L93 Difference]: Finished difference Result 32132 states and 161353 transitions. [2021-08-12 18:51:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:28,816 INFO L225 Difference]: With dead ends: 32132 [2021-08-12 18:51:28,816 INFO L226 Difference]: Without dead ends: 31049 [2021-08-12 18:51:28,826 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2021-08-12 18:51:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 13319. [2021-08-12 18:51:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 5.328127346448416) internal successors, (70960), 13318 states have internal predecessors, (70960), 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) [2021-08-12 18:51:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 70960 transitions. [2021-08-12 18:51:30,233 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 70960 transitions. Word has length 33 [2021-08-12 18:51:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:30,233 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 70960 transitions. [2021-08-12 18:51:30,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 70960 transitions. [2021-08-12 18:51:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:30,265 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:30,265 INFO L550 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] [2021-08-12 18:51:30,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 18:51:30,266 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash 904073497, now seen corresponding path program 5 times [2021-08-12 18:51:30,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:30,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109295412] [2021-08-12 18:51:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:30,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:30,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109295412] [2021-08-12 18:51:30,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109295412] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:30,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:30,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:30,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032199792] [2021-08-12 18:51:30,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:30,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:30,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:30,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:30,491 INFO L87 Difference]: Start difference. First operand 13319 states and 70960 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:33,675 INFO L93 Difference]: Finished difference Result 31977 states and 160718 transitions. [2021-08-12 18:51:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:33,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:33,895 INFO L225 Difference]: With dead ends: 31977 [2021-08-12 18:51:33,895 INFO L226 Difference]: Without dead ends: 31225 [2021-08-12 18:51:33,904 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 206.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31225 states. [2021-08-12 18:51:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31225 to 13503. [2021-08-12 18:51:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.315656939712635) internal successors, (71772), 13502 states have internal predecessors, (71772), 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) [2021-08-12 18:51:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71772 transitions. [2021-08-12 18:51:35,287 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71772 transitions. Word has length 33 [2021-08-12 18:51:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:35,288 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71772 transitions. [2021-08-12 18:51:35,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71772 transitions. [2021-08-12 18:51:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:35,317 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:35,317 INFO L550 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] [2021-08-12 18:51:35,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 18:51:35,317 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:35,318 INFO L82 PathProgramCache]: Analyzing trace with hash 286550139, now seen corresponding path program 6 times [2021-08-12 18:51:35,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:35,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229217557] [2021-08-12 18:51:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:35,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:35,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229217557] [2021-08-12 18:51:35,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229217557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:35,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:35,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:35,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219100452] [2021-08-12 18:51:35,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:35,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:35,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:35,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:35,515 INFO L87 Difference]: Start difference. First operand 13503 states and 71772 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:36,316 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-08-12 18:51:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:39,151 INFO L93 Difference]: Finished difference Result 32120 states and 161221 transitions. [2021-08-12 18:51:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:39,317 INFO L225 Difference]: With dead ends: 32120 [2021-08-12 18:51:39,317 INFO L226 Difference]: Without dead ends: 30949 [2021-08-12 18:51:39,327 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 342.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30949 states. [2021-08-12 18:51:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30949 to 13227. [2021-08-12 18:51:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.334643883260245) internal successors, (70556), 13226 states have internal predecessors, (70556), 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) [2021-08-12 18:51:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70556 transitions. [2021-08-12 18:51:40,777 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70556 transitions. Word has length 33 [2021-08-12 18:51:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:40,777 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70556 transitions. [2021-08-12 18:51:40,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70556 transitions. [2021-08-12 18:51:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:40,807 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:40,807 INFO L550 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] [2021-08-12 18:51:40,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 18:51:40,807 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1370978785, now seen corresponding path program 7 times [2021-08-12 18:51:40,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:40,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013406586] [2021-08-12 18:51:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:40,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:40,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013406586] [2021-08-12 18:51:40,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013406586] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:40,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:40,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:40,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888132193] [2021-08-12 18:51:40,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:40,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:40,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:40,963 INFO L87 Difference]: Start difference. First operand 13227 states and 70556 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:44,800 INFO L93 Difference]: Finished difference Result 31443 states and 158328 transitions. [2021-08-12 18:51:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:44,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:44,960 INFO L225 Difference]: With dead ends: 31443 [2021-08-12 18:51:44,960 INFO L226 Difference]: Without dead ends: 30683 [2021-08-12 18:51:44,971 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30683 states. [2021-08-12 18:51:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30683 to 13403. [2021-08-12 18:51:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13403 states, 13402 states have (on average 5.324876884047157) internal successors, (71364), 13402 states have internal predecessors, (71364), 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) [2021-08-12 18:51:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13403 states to 13403 states and 71364 transitions. [2021-08-12 18:51:46,483 INFO L78 Accepts]: Start accepts. Automaton has 13403 states and 71364 transitions. Word has length 33 [2021-08-12 18:51:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:46,483 INFO L482 AbstractCegarLoop]: Abstraction has 13403 states and 71364 transitions. [2021-08-12 18:51:46,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13403 states and 71364 transitions. [2021-08-12 18:51:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:46,512 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:46,512 INFO L550 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] [2021-08-12 18:51:46,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 18:51:46,512 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:46,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2077191549, now seen corresponding path program 8 times [2021-08-12 18:51:46,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:46,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120532608] [2021-08-12 18:51:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:46,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:46,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120532608] [2021-08-12 18:51:46,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120532608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:46,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:46,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:46,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478329464] [2021-08-12 18:51:46,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:46,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:46,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:46,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:46,680 INFO L87 Difference]: Start difference. First operand 13403 states and 71364 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:50,855 INFO L93 Difference]: Finished difference Result 31435 states and 158180 transitions. [2021-08-12 18:51:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:51,005 INFO L225 Difference]: With dead ends: 31435 [2021-08-12 18:51:51,005 INFO L226 Difference]: Without dead ends: 30563 [2021-08-12 18:51:51,014 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2021-08-12 18:51:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 13283. [2021-08-12 18:51:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 13282 states have (on average 5.3317271495256735) internal successors, (70816), 13282 states have internal predecessors, (70816), 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) [2021-08-12 18:51:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70816 transitions. [2021-08-12 18:51:52,493 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70816 transitions. Word has length 33 [2021-08-12 18:51:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:52,494 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70816 transitions. [2021-08-12 18:51:52,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70816 transitions. [2021-08-12 18:51:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:52,524 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:52,524 INFO L550 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] [2021-08-12 18:51:52,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-12 18:51:52,524 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash 900926973, now seen corresponding path program 9 times [2021-08-12 18:51:52,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:52,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050248309] [2021-08-12 18:51:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:52,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:52,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050248309] [2021-08-12 18:51:52,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050248309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:52,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:52,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:52,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370680129] [2021-08-12 18:51:52,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:52,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:52,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:52,687 INFO L87 Difference]: Start difference. First operand 13283 states and 70816 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:57,155 INFO L93 Difference]: Finished difference Result 31419 states and 158172 transitions. [2021-08-12 18:51:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:51:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:51:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:57,316 INFO L225 Difference]: With dead ends: 31419 [2021-08-12 18:51:57,316 INFO L226 Difference]: Without dead ends: 30659 [2021-08-12 18:51:57,326 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:51:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2021-08-12 18:51:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 13395. [2021-08-12 18:51:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.321785874272062) internal successors, (71280), 13394 states have internal predecessors, (71280), 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) [2021-08-12 18:51:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71280 transitions. [2021-08-12 18:51:58,936 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71280 transitions. Word has length 33 [2021-08-12 18:51:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:58,936 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71280 transitions. [2021-08-12 18:51:58,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:51:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71280 transitions. [2021-08-12 18:51:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:51:58,966 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:58,966 INFO L550 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] [2021-08-12 18:51:58,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-12 18:51:58,966 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:51:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 104900093, now seen corresponding path program 10 times [2021-08-12 18:51:58,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:58,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259116974] [2021-08-12 18:51:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:59,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:59,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259116974] [2021-08-12 18:51:59,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259116974] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:59,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:59,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:51:59,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065954029] [2021-08-12 18:51:59,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:51:59,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:59,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:51:59,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:51:59,111 INFO L87 Difference]: Start difference. First operand 13395 states and 71280 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:04,012 INFO L93 Difference]: Finished difference Result 31395 states and 157968 transitions. [2021-08-12 18:52:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:04,173 INFO L225 Difference]: With dead ends: 31395 [2021-08-12 18:52:04,173 INFO L226 Difference]: Without dead ends: 30547 [2021-08-12 18:52:04,183 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2021-08-12 18:52:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 13283. [2021-08-12 18:52:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 13282 states have (on average 5.327510917030568) internal successors, (70760), 13282 states have internal predecessors, (70760), 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) [2021-08-12 18:52:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70760 transitions. [2021-08-12 18:52:05,674 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70760 transitions. Word has length 33 [2021-08-12 18:52:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:05,674 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70760 transitions. [2021-08-12 18:52:05,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70760 transitions. [2021-08-12 18:52:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:05,703 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:05,703 INFO L550 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] [2021-08-12 18:52:05,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-12 18:52:05,703 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash 44178907, now seen corresponding path program 11 times [2021-08-12 18:52:05,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:05,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762016980] [2021-08-12 18:52:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:05,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:05,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762016980] [2021-08-12 18:52:05,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762016980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:05,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:05,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:05,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662895075] [2021-08-12 18:52:05,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:05,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:05,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:05,851 INFO L87 Difference]: Start difference. First operand 13283 states and 70760 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:11,053 INFO L93 Difference]: Finished difference Result 31403 states and 158060 transitions. [2021-08-12 18:52:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:11,224 INFO L225 Difference]: With dead ends: 31403 [2021-08-12 18:52:11,225 INFO L226 Difference]: Without dead ends: 30651 [2021-08-12 18:52:11,233 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-08-12 18:52:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13395. [2021-08-12 18:52:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.317604897715395) internal successors, (71224), 13394 states have internal predecessors, (71224), 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) [2021-08-12 18:52:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71224 transitions. [2021-08-12 18:52:12,809 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71224 transitions. Word has length 33 [2021-08-12 18:52:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:12,809 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71224 transitions. [2021-08-12 18:52:12,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71224 transitions. [2021-08-12 18:52:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:12,836 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:12,836 INFO L550 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] [2021-08-12 18:52:12,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-12 18:52:12,837 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -436723139, now seen corresponding path program 12 times [2021-08-12 18:52:12,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:12,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54042969] [2021-08-12 18:52:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:12,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:12,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54042969] [2021-08-12 18:52:12,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54042969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:12,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:12,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:12,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695487642] [2021-08-12 18:52:12,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:12,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:12,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:13,000 INFO L87 Difference]: Start difference. First operand 13395 states and 71224 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:18,388 INFO L93 Difference]: Finished difference Result 31387 states and 157884 transitions. [2021-08-12 18:52:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:18,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:18,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:18,540 INFO L225 Difference]: With dead ends: 31387 [2021-08-12 18:52:18,540 INFO L226 Difference]: Without dead ends: 30483 [2021-08-12 18:52:18,549 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:19,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2021-08-12 18:52:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 13227. [2021-08-12 18:52:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.332526841070618) internal successors, (70528), 13226 states have internal predecessors, (70528), 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) [2021-08-12 18:52:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70528 transitions. [2021-08-12 18:52:20,168 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70528 transitions. Word has length 33 [2021-08-12 18:52:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:20,169 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70528 transitions. [2021-08-12 18:52:20,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70528 transitions. [2021-08-12 18:52:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:20,199 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:20,199 INFO L550 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] [2021-08-12 18:52:20,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-12 18:52:20,199 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash -392502437, now seen corresponding path program 13 times [2021-08-12 18:52:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:20,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241068822] [2021-08-12 18:52:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:20,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:20,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241068822] [2021-08-12 18:52:20,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241068822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:20,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:20,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:20,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263718899] [2021-08-12 18:52:20,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:20,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:20,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:20,363 INFO L87 Difference]: Start difference. First operand 13227 states and 70528 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:26,166 INFO L93 Difference]: Finished difference Result 31726 states and 159655 transitions. [2021-08-12 18:52:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:26,320 INFO L225 Difference]: With dead ends: 31726 [2021-08-12 18:52:26,321 INFO L226 Difference]: Without dead ends: 30966 [2021-08-12 18:52:26,330 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30966 states. [2021-08-12 18:52:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30966 to 13427. [2021-08-12 18:52:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 13426 states have (on average 5.32429614181439) internal successors, (71484), 13426 states have internal predecessors, (71484), 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) [2021-08-12 18:52:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71484 transitions. [2021-08-12 18:52:27,911 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71484 transitions. Word has length 33 [2021-08-12 18:52:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:27,911 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71484 transitions. [2021-08-12 18:52:27,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71484 transitions. [2021-08-12 18:52:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:27,939 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:27,940 INFO L550 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] [2021-08-12 18:52:27,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-12 18:52:27,940 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:27,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1188529317, now seen corresponding path program 14 times [2021-08-12 18:52:27,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:27,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27748978] [2021-08-12 18:52:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:28,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:28,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27748978] [2021-08-12 18:52:28,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27748978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:28,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:28,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:28,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843079768] [2021-08-12 18:52:28,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:28,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:28,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:28,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:28,095 INFO L87 Difference]: Start difference. First operand 13427 states and 71484 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:34,338 INFO L93 Difference]: Finished difference Result 31702 states and 159451 transitions. [2021-08-12 18:52:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:34,500 INFO L225 Difference]: With dead ends: 31702 [2021-08-12 18:52:34,500 INFO L226 Difference]: Without dead ends: 30854 [2021-08-12 18:52:34,510 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30854 states. [2021-08-12 18:52:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30854 to 13315. [2021-08-12 18:52:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.330028541385008) internal successors, (70964), 13314 states have internal predecessors, (70964), 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) [2021-08-12 18:52:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70964 transitions. [2021-08-12 18:52:36,136 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70964 transitions. Word has length 33 [2021-08-12 18:52:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:36,137 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70964 transitions. [2021-08-12 18:52:36,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70964 transitions. [2021-08-12 18:52:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:36,165 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:36,165 INFO L550 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] [2021-08-12 18:52:36,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-12 18:52:36,165 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash -818478403, now seen corresponding path program 15 times [2021-08-12 18:52:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:36,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358358532] [2021-08-12 18:52:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:36,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:36,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358358532] [2021-08-12 18:52:36,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358358532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:36,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:36,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:36,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453663492] [2021-08-12 18:52:36,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:36,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:36,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:36,353 INFO L87 Difference]: Start difference. First operand 13315 states and 70964 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:43,103 INFO L93 Difference]: Finished difference Result 31961 states and 160658 transitions. [2021-08-12 18:52:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:43,265 INFO L225 Difference]: With dead ends: 31961 [2021-08-12 18:52:43,266 INFO L226 Difference]: Without dead ends: 31201 [2021-08-12 18:52:43,277 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-08-12 18:52:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13503. [2021-08-12 18:52:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.316841949340838) internal successors, (71788), 13502 states have internal predecessors, (71788), 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) [2021-08-12 18:52:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71788 transitions. [2021-08-12 18:52:44,991 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71788 transitions. Word has length 33 [2021-08-12 18:52:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:44,991 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71788 transitions. [2021-08-12 18:52:44,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71788 transitions. [2021-08-12 18:52:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:45,019 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:45,019 INFO L550 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] [2021-08-12 18:52:45,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-12 18:52:45,020 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -388777125, now seen corresponding path program 16 times [2021-08-12 18:52:45,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:45,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660387059] [2021-08-12 18:52:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:45,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:45,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660387059] [2021-08-12 18:52:45,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660387059] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:45,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:45,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:45,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509585278] [2021-08-12 18:52:45,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:45,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:45,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:45,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:45,194 INFO L87 Difference]: Start difference. First operand 13503 states and 71788 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:52,164 INFO L93 Difference]: Finished difference Result 32096 states and 161129 transitions. [2021-08-12 18:52:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:52:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:52:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:52,327 INFO L225 Difference]: With dead ends: 32096 [2021-08-12 18:52:52,327 INFO L226 Difference]: Without dead ends: 31013 [2021-08-12 18:52:52,337 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:52:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31013 states. [2021-08-12 18:52:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31013 to 13315. [2021-08-12 18:52:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.323418957488358) internal successors, (70876), 13314 states have internal predecessors, (70876), 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) [2021-08-12 18:52:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70876 transitions. [2021-08-12 18:52:53,992 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70876 transitions. Word has length 33 [2021-08-12 18:52:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:53,992 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70876 transitions. [2021-08-12 18:52:53,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:52:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70876 transitions. [2021-08-12 18:52:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:52:54,026 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:54,026 INFO L550 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] [2021-08-12 18:52:54,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-12 18:52:54,026 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:52:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash 244429659, now seen corresponding path program 17 times [2021-08-12 18:52:54,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:54,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198113978] [2021-08-12 18:52:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:54,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:54,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198113978] [2021-08-12 18:52:54,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198113978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:54,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:54,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:52:54,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511612244] [2021-08-12 18:52:54,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:52:54,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:52:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:52:54,216 INFO L87 Difference]: Start difference. First operand 13315 states and 70876 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:01,412 INFO L93 Difference]: Finished difference Result 31901 states and 160334 transitions. [2021-08-12 18:53:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:01,575 INFO L225 Difference]: With dead ends: 31901 [2021-08-12 18:53:01,576 INFO L226 Difference]: Without dead ends: 31165 [2021-08-12 18:53:01,584 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31165 states. [2021-08-12 18:53:03,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31165 to 13491. [2021-08-12 18:53:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.312083024462565) internal successors, (71660), 13490 states have internal predecessors, (71660), 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) [2021-08-12 18:53:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71660 transitions. [2021-08-12 18:53:03,334 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71660 transitions. Word has length 33 [2021-08-12 18:53:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:03,334 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71660 transitions. [2021-08-12 18:53:03,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71660 transitions. [2021-08-12 18:53:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:03,364 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:03,364 INFO L550 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] [2021-08-12 18:53:03,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-12 18:53:03,364 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 319963965, now seen corresponding path program 18 times [2021-08-12 18:53:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:03,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277113984] [2021-08-12 18:53:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:03,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:03,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277113984] [2021-08-12 18:53:03,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277113984] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:03,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:03,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:03,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557984144] [2021-08-12 18:53:03,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:03,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:03,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:03,543 INFO L87 Difference]: Start difference. First operand 13491 states and 71660 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:11,153 INFO L93 Difference]: Finished difference Result 32060 states and 160909 transitions. [2021-08-12 18:53:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:11,314 INFO L225 Difference]: With dead ends: 32060 [2021-08-12 18:53:11,314 INFO L226 Difference]: Without dead ends: 30901 [2021-08-12 18:53:11,324 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-08-12 18:53:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 13227. [2021-08-12 18:53:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.32920006048692) internal successors, (70484), 13226 states have internal predecessors, (70484), 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) [2021-08-12 18:53:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70484 transitions. [2021-08-12 18:53:13,038 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70484 transitions. Word has length 33 [2021-08-12 18:53:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:13,038 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70484 transitions. [2021-08-12 18:53:13,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70484 transitions. [2021-08-12 18:53:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:13,066 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:13,066 INFO L550 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] [2021-08-12 18:53:13,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-12 18:53:13,066 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2072640441, now seen corresponding path program 19 times [2021-08-12 18:53:13,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:13,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571872702] [2021-08-12 18:53:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:13,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:13,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571872702] [2021-08-12 18:53:13,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571872702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:13,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:13,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:13,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173665208] [2021-08-12 18:53:13,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:13,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:13,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:13,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:13,239 INFO L87 Difference]: Start difference. First operand 13227 states and 70484 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:21,010 INFO L93 Difference]: Finished difference Result 31698 states and 159511 transitions. [2021-08-12 18:53:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:21,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:21,168 INFO L225 Difference]: With dead ends: 31698 [2021-08-12 18:53:21,168 INFO L226 Difference]: Without dead ends: 30946 [2021-08-12 18:53:21,177 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30946 states. [2021-08-12 18:53:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30946 to 13427. [2021-08-12 18:53:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 13426 states have (on average 5.3210189185163115) internal successors, (71440), 13426 states have internal predecessors, (71440), 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) [2021-08-12 18:53:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71440 transitions. [2021-08-12 18:53:22,961 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71440 transitions. Word has length 33 [2021-08-12 18:53:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:22,961 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71440 transitions. [2021-08-12 18:53:22,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71440 transitions. [2021-08-12 18:53:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:22,988 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:22,988 INFO L550 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] [2021-08-12 18:53:22,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-12 18:53:22,988 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1591738395, now seen corresponding path program 20 times [2021-08-12 18:53:22,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:22,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105120776] [2021-08-12 18:53:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:23,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:23,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105120776] [2021-08-12 18:53:23,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105120776] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:23,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:23,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:23,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090271364] [2021-08-12 18:53:23,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:23,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:23,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:23,145 INFO L87 Difference]: Start difference. First operand 13427 states and 71440 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:31,369 INFO L93 Difference]: Finished difference Result 31682 states and 159335 transitions. [2021-08-12 18:53:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:31,537 INFO L225 Difference]: With dead ends: 31682 [2021-08-12 18:53:31,537 INFO L226 Difference]: Without dead ends: 30834 [2021-08-12 18:53:31,547 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2021-08-12 18:53:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 13315. [2021-08-12 18:53:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.326723749436683) internal successors, (70920), 13314 states have internal predecessors, (70920), 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) [2021-08-12 18:53:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70920 transitions. [2021-08-12 18:53:33,356 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70920 transitions. Word has length 33 [2021-08-12 18:53:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:33,357 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70920 transitions. [2021-08-12 18:53:33,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70920 transitions. [2021-08-12 18:53:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:33,385 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:33,385 INFO L550 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] [2021-08-12 18:53:33,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-12 18:53:33,385 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:33,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1646664475, now seen corresponding path program 21 times [2021-08-12 18:53:33,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:33,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15209205] [2021-08-12 18:53:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:33,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:33,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15209205] [2021-08-12 18:53:33,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15209205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:33,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:33,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:33,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214315575] [2021-08-12 18:53:33,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:33,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:33,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:33,552 INFO L87 Difference]: Start difference. First operand 13315 states and 70920 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:42,176 INFO L93 Difference]: Finished difference Result 31929 states and 160498 transitions. [2021-08-12 18:53:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:42,338 INFO L225 Difference]: With dead ends: 31929 [2021-08-12 18:53:42,338 INFO L226 Difference]: Without dead ends: 31177 [2021-08-12 18:53:42,348 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 190.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31177 states. [2021-08-12 18:53:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31177 to 13499. [2021-08-12 18:53:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 13498 states have (on average 5.314268780560083) internal successors, (71732), 13498 states have internal predecessors, (71732), 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) [2021-08-12 18:53:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 71732 transitions. [2021-08-12 18:53:44,198 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 71732 transitions. Word has length 33 [2021-08-12 18:53:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:44,199 INFO L482 AbstractCegarLoop]: Abstraction has 13499 states and 71732 transitions. [2021-08-12 18:53:44,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 71732 transitions. [2021-08-12 18:53:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:44,227 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:44,227 INFO L550 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] [2021-08-12 18:53:44,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-12 18:53:44,227 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash -929238245, now seen corresponding path program 22 times [2021-08-12 18:53:44,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:44,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596964887] [2021-08-12 18:53:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:44,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:44,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596964887] [2021-08-12 18:53:44,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596964887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:44,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:44,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:44,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649031649] [2021-08-12 18:53:44,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:44,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:44,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:44,390 INFO L87 Difference]: Start difference. First operand 13499 states and 71732 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:53,462 INFO L93 Difference]: Finished difference Result 32072 states and 161001 transitions. [2021-08-12 18:53:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:53:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:53:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:53,632 INFO L225 Difference]: With dead ends: 32072 [2021-08-12 18:53:53,632 INFO L226 Difference]: Without dead ends: 30993 [2021-08-12 18:53:53,641 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:53:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2021-08-12 18:53:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 13315. [2021-08-12 18:53:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.3201141655400335) internal successors, (70832), 13314 states have internal predecessors, (70832), 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) [2021-08-12 18:53:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70832 transitions. [2021-08-12 18:53:55,467 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70832 transitions. Word has length 33 [2021-08-12 18:53:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:55,468 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70832 transitions. [2021-08-12 18:53:55,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:53:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70832 transitions. [2021-08-12 18:53:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:53:55,496 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:55,496 INFO L550 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] [2021-08-12 18:53:55,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-12 18:53:55,496 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:53:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash 857278205, now seen corresponding path program 23 times [2021-08-12 18:53:55,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:55,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177748702] [2021-08-12 18:53:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:55,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:55,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177748702] [2021-08-12 18:53:55,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177748702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:55,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:55,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:53:55,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579096188] [2021-08-12 18:53:55,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:53:55,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:55,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:53:55,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:53:55,674 INFO L87 Difference]: Start difference. First operand 13315 states and 70832 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:05,028 INFO L93 Difference]: Finished difference Result 31889 states and 160246 transitions. [2021-08-12 18:54:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:54:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:54:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:05,198 INFO L225 Difference]: With dead ends: 31889 [2021-08-12 18:54:05,198 INFO L226 Difference]: Without dead ends: 31153 [2021-08-12 18:54:05,209 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:54:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31153 states. [2021-08-12 18:54:07,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31153 to 13491. [2021-08-12 18:54:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.308821349147516) internal successors, (71616), 13490 states have internal predecessors, (71616), 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) [2021-08-12 18:54:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71616 transitions. [2021-08-12 18:54:07,174 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71616 transitions. Word has length 33 [2021-08-12 18:54:07,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:07,174 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71616 transitions. [2021-08-12 18:54:07,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71616 transitions. [2021-08-12 18:54:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:54:07,202 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:07,203 INFO L550 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] [2021-08-12 18:54:07,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-12 18:54:07,203 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:54:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1096125605, now seen corresponding path program 24 times [2021-08-12 18:54:07,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:07,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402276767] [2021-08-12 18:54:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:07,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:07,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402276767] [2021-08-12 18:54:07,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402276767] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:07,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:07,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:54:07,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748117283] [2021-08-12 18:54:07,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:54:07,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:07,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:54:07,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:54:07,385 INFO L87 Difference]: Start difference. First operand 13491 states and 71616 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:17,205 INFO L93 Difference]: Finished difference Result 32048 states and 160821 transitions. [2021-08-12 18:54:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:54:17,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:54:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:17,380 INFO L225 Difference]: With dead ends: 32048 [2021-08-12 18:54:17,380 INFO L226 Difference]: Without dead ends: 30845 [2021-08-12 18:54:17,389 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:54:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30845 states. [2021-08-12 18:54:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30845 to 13183. [2021-08-12 18:54:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 5.333788499468973) internal successors, (70310), 13182 states have internal predecessors, (70310), 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) [2021-08-12 18:54:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70310 transitions. [2021-08-12 18:54:19,256 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70310 transitions. Word has length 33 [2021-08-12 18:54:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:19,257 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70310 transitions. [2021-08-12 18:54:19,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70310 transitions. [2021-08-12 18:54:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:54:19,285 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:19,285 INFO L550 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] [2021-08-12 18:54:19,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-12 18:54:19,285 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:54:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1900453661, now seen corresponding path program 25 times [2021-08-12 18:54:19,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:19,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122171565] [2021-08-12 18:54:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:19,506 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-08-12 18:54:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:19,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:19,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122171565] [2021-08-12 18:54:19,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122171565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:19,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:19,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:54:19,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944919607] [2021-08-12 18:54:19,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:54:19,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:19,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:54:19,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:54:19,607 INFO L87 Difference]: Start difference. First operand 13183 states and 70310 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:29,387 INFO L93 Difference]: Finished difference Result 32011 states and 160924 transitions. [2021-08-12 18:54:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:54:29,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:54:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:29,545 INFO L225 Difference]: With dead ends: 32011 [2021-08-12 18:54:29,546 INFO L226 Difference]: Without dead ends: 31251 [2021-08-12 18:54:29,555 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 344.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:54:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2021-08-12 18:54:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 13457. [2021-08-12 18:54:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13457 states, 13456 states have (on average 5.32647146254459) internal successors, (71673), 13456 states have internal predecessors, (71673), 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) [2021-08-12 18:54:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13457 states to 13457 states and 71673 transitions. [2021-08-12 18:54:31,626 INFO L78 Accepts]: Start accepts. Automaton has 13457 states and 71673 transitions. Word has length 33 [2021-08-12 18:54:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:31,626 INFO L482 AbstractCegarLoop]: Abstraction has 13457 states and 71673 transitions. [2021-08-12 18:54:31,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13457 states and 71673 transitions. [2021-08-12 18:54:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:54:31,656 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:31,656 INFO L550 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] [2021-08-12 18:54:31,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-12 18:54:31,656 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:54:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1053656699, now seen corresponding path program 26 times [2021-08-12 18:54:31,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:31,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942534027] [2021-08-12 18:54:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:31,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:31,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942534027] [2021-08-12 18:54:31,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942534027] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:31,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:31,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:54:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032211705] [2021-08-12 18:54:31,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:54:31,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:54:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:54:31,798 INFO L87 Difference]: Start difference. First operand 13457 states and 71673 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:41,883 INFO L93 Difference]: Finished difference Result 32003 states and 160776 transitions. [2021-08-12 18:54:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:54:41,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:54:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:42,056 INFO L225 Difference]: With dead ends: 32003 [2021-08-12 18:54:42,056 INFO L226 Difference]: Without dead ends: 31131 [2021-08-12 18:54:42,065 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:54:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2021-08-12 18:54:43,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 13337. [2021-08-12 18:54:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13337 states, 13336 states have (on average 5.333008398320336) internal successors, (71121), 13336 states have internal predecessors, (71121), 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) [2021-08-12 18:54:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71121 transitions. [2021-08-12 18:54:43,959 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71121 transitions. Word has length 33 [2021-08-12 18:54:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:43,960 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71121 transitions. [2021-08-12 18:54:43,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71121 transitions. [2021-08-12 18:54:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:54:43,991 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:43,991 INFO L550 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] [2021-08-12 18:54:43,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-12 18:54:43,992 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:54:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -643119331, now seen corresponding path program 27 times [2021-08-12 18:54:43,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:43,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530766077] [2021-08-12 18:54:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:44,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:44,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530766077] [2021-08-12 18:54:44,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530766077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:44,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:44,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:54:44,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517118144] [2021-08-12 18:54:44,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:54:44,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:44,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:54:44,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:54:44,187 INFO L87 Difference]: Start difference. First operand 13337 states and 71121 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:54,862 INFO L93 Difference]: Finished difference Result 32222 states and 161823 transitions. [2021-08-12 18:54:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:54:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:54:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:55,025 INFO L225 Difference]: With dead ends: 32222 [2021-08-12 18:54:55,025 INFO L226 Difference]: Without dead ends: 31462 [2021-08-12 18:54:55,034 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:54:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31462 states. [2021-08-12 18:54:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31462 to 13525. [2021-08-12 18:54:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13525 states, 13524 states have (on average 5.319801833776989) internal successors, (71945), 13524 states have internal predecessors, (71945), 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) [2021-08-12 18:54:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13525 states to 13525 states and 71945 transitions. [2021-08-12 18:54:57,013 INFO L78 Accepts]: Start accepts. Automaton has 13525 states and 71945 transitions. Word has length 33 [2021-08-12 18:54:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:57,014 INFO L482 AbstractCegarLoop]: Abstraction has 13525 states and 71945 transitions. [2021-08-12 18:54:57,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:54:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 13525 states and 71945 transitions. [2021-08-12 18:54:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:54:57,044 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:57,044 INFO L550 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] [2021-08-12 18:54:57,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-12 18:54:57,044 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:54:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1744961309, now seen corresponding path program 28 times [2021-08-12 18:54:57,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:57,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200505619] [2021-08-12 18:54:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:57,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:57,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200505619] [2021-08-12 18:54:57,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200505619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:57,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:57,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:54:57,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683463482] [2021-08-12 18:54:57,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:54:57,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:57,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:54:57,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:54:57,208 INFO L87 Difference]: Start difference. First operand 13525 states and 71945 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:08,435 INFO L93 Difference]: Finished difference Result 32357 states and 162294 transitions. [2021-08-12 18:55:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:55:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:55:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:08,598 INFO L225 Difference]: With dead ends: 32357 [2021-08-12 18:55:08,598 INFO L226 Difference]: Without dead ends: 31274 [2021-08-12 18:55:08,608 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:55:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31274 states. [2021-08-12 18:55:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31274 to 13337. [2021-08-12 18:55:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13337 states, 13336 states have (on average 5.326109778044391) internal successors, (71029), 13336 states have internal predecessors, (71029), 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) [2021-08-12 18:55:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71029 transitions. [2021-08-12 18:55:10,746 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71029 transitions. Word has length 33 [2021-08-12 18:55:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:10,746 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71029 transitions. [2021-08-12 18:55:10,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71029 transitions. [2021-08-12 18:55:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:55:10,776 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:10,776 INFO L550 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] [2021-08-12 18:55:10,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-12 18:55:10,776 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:55:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1499867397, now seen corresponding path program 29 times [2021-08-12 18:55:10,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:10,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469021824] [2021-08-12 18:55:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:10,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:10,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469021824] [2021-08-12 18:55:10,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469021824] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:10,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:10,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:55:10,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585232319] [2021-08-12 18:55:10,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:55:10,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:10,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:55:10,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:55:10,929 INFO L87 Difference]: Start difference. First operand 13337 states and 71029 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:22,146 INFO L93 Difference]: Finished difference Result 32202 states and 161659 transitions. [2021-08-12 18:55:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:55:22,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:55:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:22,310 INFO L225 Difference]: With dead ends: 32202 [2021-08-12 18:55:22,310 INFO L226 Difference]: Without dead ends: 31450 [2021-08-12 18:55:22,320 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:55:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31450 states. [2021-08-12 18:55:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31450 to 13521. [2021-08-12 18:55:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 13520 states have (on average 5.313683431952663) internal successors, (71841), 13520 states have internal predecessors, (71841), 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) [2021-08-12 18:55:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 71841 transitions. [2021-08-12 18:55:24,422 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 71841 transitions. Word has length 33 [2021-08-12 18:55:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:24,422 INFO L482 AbstractCegarLoop]: Abstraction has 13521 states and 71841 transitions. [2021-08-12 18:55:24,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 71841 transitions. [2021-08-12 18:55:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:55:24,451 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:24,451 INFO L550 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] [2021-08-12 18:55:24,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-12 18:55:24,451 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:55:24,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2117390755, now seen corresponding path program 30 times [2021-08-12 18:55:24,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:24,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405811471] [2021-08-12 18:55:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:24,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:24,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405811471] [2021-08-12 18:55:24,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405811471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:24,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:24,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:55:24,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388230870] [2021-08-12 18:55:24,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:55:24,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:55:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:55:24,634 INFO L87 Difference]: Start difference. First operand 13521 states and 71841 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:36,324 INFO L93 Difference]: Finished difference Result 32345 states and 162162 transitions. [2021-08-12 18:55:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:55:36,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:55:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:36,487 INFO L225 Difference]: With dead ends: 32345 [2021-08-12 18:55:36,487 INFO L226 Difference]: Without dead ends: 31174 [2021-08-12 18:55:36,496 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:55:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2021-08-12 18:55:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 13245. [2021-08-12 18:55:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 13244 states have (on average 5.33245243128964) internal successors, (70623), 13244 states have internal predecessors, (70623), 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) [2021-08-12 18:55:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70623 transitions. [2021-08-12 18:55:38,552 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70623 transitions. Word has length 33 [2021-08-12 18:55:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:38,552 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70623 transitions. [2021-08-12 18:55:38,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70623 transitions. [2021-08-12 18:55:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:55:38,581 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:38,581 INFO L550 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] [2021-08-12 18:55:38,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-12 18:55:38,581 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:55:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash -474558307, now seen corresponding path program 31 times [2021-08-12 18:55:38,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:38,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050117532] [2021-08-12 18:55:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:38,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:38,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050117532] [2021-08-12 18:55:38,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050117532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:38,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:38,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:55:38,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45017355] [2021-08-12 18:55:38,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:55:38,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:38,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:55:38,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:55:38,712 INFO L87 Difference]: Start difference. First operand 13245 states and 70623 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:50,328 INFO L93 Difference]: Finished difference Result 31722 states and 159484 transitions. [2021-08-12 18:55:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 18:55:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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 33 [2021-08-12 18:55:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:50,481 INFO L225 Difference]: With dead ends: 31722 [2021-08-12 18:55:50,482 INFO L226 Difference]: Without dead ends: 30962 [2021-08-12 18:55:50,491 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-08-12 18:55:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30962 states. [2021-08-12 18:55:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30962 to 13425. [2021-08-12 18:55:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13425 states, 13424 states have (on average 5.322631108462455) internal successors, (71451), 13424 states have internal predecessors, (71451), 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) [2021-08-12 18:55:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 71451 transitions. [2021-08-12 18:55:52,742 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 71451 transitions. Word has length 33 [2021-08-12 18:55:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:52,742 INFO L482 AbstractCegarLoop]: Abstraction has 13425 states and 71451 transitions. [2021-08-12 18:55:52,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-12 18:55:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 71451 transitions. [2021-08-12 18:55:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-12 18:55:52,770 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:52,770 INFO L550 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] [2021-08-12 18:55:52,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-12 18:55:52,770 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 18:55:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:52,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1321355269, now seen corresponding path program 32 times [2021-08-12 18:55:52,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:52,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356738201] [2021-08-12 18:55:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:52,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:52,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356738201] [2021-08-12 18:55:52,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356738201] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:52,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:52,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 18:55:52,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675080040] [2021-08-12 18:55:52,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 18:55:52,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:52,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 18:55:52,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-12 18:55:52,895 INFO L87 Difference]: Start difference. First operand 13425 states and 71451 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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)