/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 18:18:54,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 18:18:54,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 18:18:54,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 18:18:54,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 18:18:54,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 18:18:54,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 18:18:54,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 18:18:54,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 18:18:54,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 18:18:54,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 18:18:54,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 18:18:54,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 18:18:54,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 18:18:54,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 18:18:54,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 18:18:54,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 18:18:54,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 18:18:54,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 18:18:54,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 18:18:54,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 18:18:54,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 18:18:54,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 18:18:54,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 18:18:54,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 18:18:54,316 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-Delay.epf [2021-06-16 18:18:54,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 18:18:54,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 18:18:54,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 18:18:54,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 18:18:54,355 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 18:18:54,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 18:18:54,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 18:18:54,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 18:18:54,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 18:18:54,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 18:18:54,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 18:18:54,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 18:18:54,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 18:18:54,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 18:18:54,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 18:18:54,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 18:18:54,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 18:18:54,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 18:18:54,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 18:18:54,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 18:18:54,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 18:18:54,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 18:18:54,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 18:18:54,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 18:18:54,360 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 18:18:54,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 18:18:54,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 18:18:54,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 18:18:54,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 18:18:54,691 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 18:18:54,692 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 18:18:54,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-06-16 18:18:54,694 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-06-16 18:18:54,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 18:18:54,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 18:18:54,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 18:18:54,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 18:18:54,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 18:18:54,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 18:18:54,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 18:18:54,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 18:18:54,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 18:18:54,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... [2021-06-16 18:18:54,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 18:18:54,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 18:18:54,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 18:18:54,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 18:18:54,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 18:18:54,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 18:18:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 18:18:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 18:18:54,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 18:18:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 18:18:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 18:18:54,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 18:18:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 18:18:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 18:18:54,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 18:18:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 18:18:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 18:18:54,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-16 18:18:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-16 18:18:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-16 18:18:54,836 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 18:18:55,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 18:18:55,057 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 18:18:55,058 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 06:18:55 BoogieIcfgContainer [2021-06-16 18:18:55,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 18:18:55,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 18:18:55,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 18:18:55,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 18:18:55,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:18:54" (1/2) ... [2021-06-16 18:18:55,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71431528 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 06:18:55, skipping insertion in model container [2021-06-16 18:18:55,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 06:18:55" (2/2) ... [2021-06-16 18:18:55,078 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-06-16 18:18:55,083 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 18:18:55,083 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 18:18:55,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 18:18:55,084 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 18:18:55,173 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-16 18:18:55,208 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-16 18:18:55,225 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 18:18:55,226 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 18:18:55,226 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 18:18:55,226 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 18:18:55,226 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 18:18:55,226 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 18:18:55,226 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 18:18:55,226 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 18:18:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 5271 states, 4310 states have (on average 1.554524361948956) internal successors, (6700), 5270 states have internal predecessors, (6700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:55,871 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:55,872 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:55,872 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:55,877 INFO L82 PathProgramCache]: Analyzing trace with hash -602588598, now seen corresponding path program 1 times [2021-06-16 18:18:55,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:55,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429469597] [2021-06-16 18:18:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:55,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:55,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 18:18:55,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:55,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:18:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:18:55,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:18:55,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429469597] [2021-06-16 18:18:55,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429469597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:18:55,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:18:55,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 18:18:55,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434812898] [2021-06-16 18:18:55,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 18:18:55,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:18:56,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 18:18:56,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:18:56,014 INFO L87 Difference]: Start difference. First operand has 5271 states, 4310 states have (on average 1.554524361948956) internal successors, (6700), 5270 states have internal predecessors, (6700), 0 states have call successors, (0), 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:18:56,060 INFO L93 Difference]: Finished difference Result 4197 states and 5353 transitions. [2021-06-16 18:18:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 18:18:56,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:18:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:18:56,069 INFO L225 Difference]: With dead ends: 4197 [2021-06-16 18:18:56,069 INFO L226 Difference]: Without dead ends: 122 [2021-06-16 18:18:56,070 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:18:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-06-16 18:18:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-06-16 18:18:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.2892561983471074) internal successors, (156), 121 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2021-06-16 18:18:56,127 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 39 [2021-06-16 18:18:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:18:56,127 INFO L482 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2021-06-16 18:18:56,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2021-06-16 18:18:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:56,128 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:56,128 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:56,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 18:18:56,128 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1447169482, now seen corresponding path program 2 times [2021-06-16 18:18:56,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:56,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063502864] [2021-06-16 18:18:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:56,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 18:18:56,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:18:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:18:56,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:18:56,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063502864] [2021-06-16 18:18:56,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063502864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:18:56,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:18:56,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 18:18:56,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908675754] [2021-06-16 18:18:56,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 18:18:56,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:18:56,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 18:18:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:18:56,184 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:18:56,201 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-06-16 18:18:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 18:18:56,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:18:56,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:18:56,203 INFO L225 Difference]: With dead ends: 106 [2021-06-16 18:18:56,203 INFO L226 Difference]: Without dead ends: 106 [2021-06-16 18:18:56,204 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:18:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-06-16 18:18:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-06-16 18:18:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 105 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 131 transitions. [2021-06-16 18:18:56,212 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 131 transitions. Word has length 39 [2021-06-16 18:18:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:18:56,213 INFO L482 AbstractCegarLoop]: Abstraction has 106 states and 131 transitions. [2021-06-16 18:18:56,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 131 transitions. [2021-06-16 18:18:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:56,214 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:56,214 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:56,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 18:18:56,214 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:56,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2081849868, now seen corresponding path program 3 times [2021-06-16 18:18:56,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:56,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372043557] [2021-06-16 18:18:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:56,404 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:18:56,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:18:56,426 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:56,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:56,437 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:56,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:56,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:56,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:56,755 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:18:56,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:18:56,779 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:18:56,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:18:56,811 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:18:56,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:56,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:56,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:18:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:18:56,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:18:56,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372043557] [2021-06-16 18:18:56,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372043557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:18:56,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:18:56,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-16 18:18:56,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198774621] [2021-06-16 18:18:56,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-16 18:18:56,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:18:56,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-16 18:18:56,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-16 18:18:56,830 INFO L87 Difference]: Start difference. First operand 106 states and 131 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:18:57,610 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2021-06-16 18:18:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:18:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:18:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:18:57,621 INFO L225 Difference]: With dead ends: 158 [2021-06-16 18:18:57,621 INFO L226 Difference]: Without dead ends: 145 [2021-06-16 18:18:57,622 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 735.6ms TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:18:57,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-06-16 18:18:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 121. [2021-06-16 18:18:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 120 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2021-06-16 18:18:57,635 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 39 [2021-06-16 18:18:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:18:57,636 INFO L482 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2021-06-16 18:18:57,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2021-06-16 18:18:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:57,637 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:57,637 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:57,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 18:18:57,637 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:57,638 INFO L82 PathProgramCache]: Analyzing trace with hash -532620788, now seen corresponding path program 4 times [2021-06-16 18:18:57,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:57,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844947310] [2021-06-16 18:18:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:57,748 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:18:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:18:57,758 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:57,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:57,767 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:57,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:57,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:57,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:57,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:57,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:18:58,007 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:18:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:18:58,032 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:18:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:18:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:18:58,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:18:58,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844947310] [2021-06-16 18:18:58,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844947310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:18:58,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:18:58,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:18:58,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934526046] [2021-06-16 18:18:58,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:18:58,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:18:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:18:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:18:58,038 INFO L87 Difference]: Start difference. First operand 121 states and 152 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:18:58,854 INFO L93 Difference]: Finished difference Result 165 states and 206 transitions. [2021-06-16 18:18:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 18:18:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:18:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:18:58,856 INFO L225 Difference]: With dead ends: 165 [2021-06-16 18:18:58,856 INFO L226 Difference]: Without dead ends: 156 [2021-06-16 18:18:58,856 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 707.5ms TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:18:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-06-16 18:18:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 123. [2021-06-16 18:18:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 122 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 154 transitions. [2021-06-16 18:18:58,864 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 154 transitions. Word has length 39 [2021-06-16 18:18:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:18:58,864 INFO L482 AbstractCegarLoop]: Abstraction has 123 states and 154 transitions. [2021-06-16 18:18:58,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 154 transitions. [2021-06-16 18:18:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:58,865 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:58,865 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:58,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 18:18:58,865 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1967688278, now seen corresponding path program 5 times [2021-06-16 18:18:58,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:58,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847779108] [2021-06-16 18:18:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:58,921 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:18:58,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:18:58,927 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:58,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:58,936 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:58,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:58,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:58,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:58,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:58,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:58,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:58,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:58,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:58,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:18:59,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:59,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:18:59,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:18:59,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:18:59,166 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:18:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:18:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:18:59,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:18:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:18:59,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:18:59,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847779108] [2021-06-16 18:18:59,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847779108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:18:59,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:18:59,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:18:59,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241755949] [2021-06-16 18:18:59,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:18:59,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:18:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:18:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:18:59,171 INFO L87 Difference]: Start difference. First operand 123 states and 154 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:18:59,912 INFO L93 Difference]: Finished difference Result 154 states and 194 transitions. [2021-06-16 18:18:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:18:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:18:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:18:59,914 INFO L225 Difference]: With dead ends: 154 [2021-06-16 18:18:59,914 INFO L226 Difference]: Without dead ends: 143 [2021-06-16 18:18:59,914 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 603.9ms TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:18:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-06-16 18:18:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 120. [2021-06-16 18:18:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 119 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2021-06-16 18:18:59,920 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 39 [2021-06-16 18:18:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:18:59,920 INFO L482 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2021-06-16 18:18:59,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:18:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2021-06-16 18:18:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:18:59,921 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:18:59,921 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:18:59,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 18:18:59,921 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:18:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:18:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1824768810, now seen corresponding path program 6 times [2021-06-16 18:18:59,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:18:59,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550135024] [2021-06-16 18:18:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:18:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:18:59,985 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:18:59,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:18:59,990 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:59,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:18:59,998 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:18:59,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:00,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:00,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:00,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:00,210 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:00,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:00,236 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:00,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:00,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:00,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:00,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:00,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550135024] [2021-06-16 18:19:00,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550135024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:00,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:00,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:00,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207328368] [2021-06-16 18:19:00,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:00,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:00,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:00,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:00,251 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:00,993 INFO L93 Difference]: Finished difference Result 163 states and 201 transitions. [2021-06-16 18:19:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:00,995 INFO L225 Difference]: With dead ends: 163 [2021-06-16 18:19:00,995 INFO L226 Difference]: Without dead ends: 154 [2021-06-16 18:19:00,995 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 623.3ms TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-06-16 18:19:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 131. [2021-06-16 18:19:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 130 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2021-06-16 18:19:01,000 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 39 [2021-06-16 18:19:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:01,000 INFO L482 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2021-06-16 18:19:01,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2021-06-16 18:19:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:01,001 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:01,001 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:01,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 18:19:01,002 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:01,002 INFO L82 PathProgramCache]: Analyzing trace with hash 389701320, now seen corresponding path program 7 times [2021-06-16 18:19:01,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:01,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803066080] [2021-06-16 18:19:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:01,034 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:01,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:01,039 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:01,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:01,047 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:01,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:01,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:01,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:01,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:01,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:01,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:01,262 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:01,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:01,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:01,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:01,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:01,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803066080] [2021-06-16 18:19:01,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803066080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:01,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:01,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:01,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388646655] [2021-06-16 18:19:01,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:01,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:01,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:01,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:01,272 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:01,943 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2021-06-16 18:19:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:01,944 INFO L225 Difference]: With dead ends: 162 [2021-06-16 18:19:01,944 INFO L226 Difference]: Without dead ends: 153 [2021-06-16 18:19:01,945 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 578.4ms TimeCoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-06-16 18:19:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2021-06-16 18:19:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.255813953488372) internal successors, (162), 129 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2021-06-16 18:19:01,949 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 39 [2021-06-16 18:19:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:01,949 INFO L482 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2021-06-16 18:19:01,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2021-06-16 18:19:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:01,950 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:01,950 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:01,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 18:19:01,950 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:01,950 INFO L82 PathProgramCache]: Analyzing trace with hash 471100376, now seen corresponding path program 8 times [2021-06-16 18:19:01,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:01,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982800828] [2021-06-16 18:19:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:01,981 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:01,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:01,987 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:01,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:01,994 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:01,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:02,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:02,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:02,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:02,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:02,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:02,217 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:02,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:02,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:02,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:02,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982800828] [2021-06-16 18:19:02,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982800828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:02,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:02,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:02,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315543910] [2021-06-16 18:19:02,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:02,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:02,223 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:02,879 INFO L93 Difference]: Finished difference Result 151 states and 187 transitions. [2021-06-16 18:19:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:02,880 INFO L225 Difference]: With dead ends: 151 [2021-06-16 18:19:02,880 INFO L226 Difference]: Without dead ends: 123 [2021-06-16 18:19:02,881 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 569.4ms TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2021-06-16 18:19:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-06-16 18:19:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2021-06-16 18:19:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.25) internal successors, (140), 112 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2021-06-16 18:19:02,884 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 39 [2021-06-16 18:19:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:02,884 INFO L482 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2021-06-16 18:19:02,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2021-06-16 18:19:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:02,885 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:02,885 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:02,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 18:19:02,885 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash -352231092, now seen corresponding path program 9 times [2021-06-16 18:19:02,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:02,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624466811] [2021-06-16 18:19:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:02,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 18:19:02,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:02,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:02,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624466811] [2021-06-16 18:19:02,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624466811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:02,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:02,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 18:19:02,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656382847] [2021-06-16 18:19:02,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 18:19:02,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:02,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 18:19:02,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:19:02,902 INFO L87 Difference]: Start difference. First operand 113 states and 140 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:02,905 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2021-06-16 18:19:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 18:19:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:02,906 INFO L225 Difference]: With dead ends: 104 [2021-06-16 18:19:02,906 INFO L226 Difference]: Without dead ends: 81 [2021-06-16 18:19:02,906 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:19:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-06-16 18:19:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-06-16 18:19:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2375) internal successors, (99), 80 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2021-06-16 18:19:02,909 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 39 [2021-06-16 18:19:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:02,909 INFO L482 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2021-06-16 18:19:02,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2021-06-16 18:19:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:02,909 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:02,909 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:02,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 18:19:02,910 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:02,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1332684276, now seen corresponding path program 10 times [2021-06-16 18:19:02,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:02,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037234598] [2021-06-16 18:19:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:02,936 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:02,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:02,947 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:02,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:02,954 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:02,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:02,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:02,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:02,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:03,124 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:19:03,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:03,132 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:03,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:03,158 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:03,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:03,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:03,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:03,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037234598] [2021-06-16 18:19:03,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037234598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:03,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:03,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:03,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905354984] [2021-06-16 18:19:03,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:03,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:03,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:03,164 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:03,822 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2021-06-16 18:19:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 18:19:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:03,823 INFO L225 Difference]: With dead ends: 130 [2021-06-16 18:19:03,823 INFO L226 Difference]: Without dead ends: 117 [2021-06-16 18:19:03,824 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 585.7ms TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-06-16 18:19:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2021-06-16 18:19:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2021-06-16 18:19:03,827 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 39 [2021-06-16 18:19:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:03,827 INFO L482 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2021-06-16 18:19:03,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2021-06-16 18:19:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:03,828 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:03,828 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:03,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 18:19:03,828 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 347812364, now seen corresponding path program 11 times [2021-06-16 18:19:03,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:03,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733297443] [2021-06-16 18:19:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:03,857 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:03,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:03,862 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:03,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:03,871 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:03,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:03,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:03,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:04,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:04,077 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:04,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:04,099 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:04,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:04,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:04,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:04,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733297443] [2021-06-16 18:19:04,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733297443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:04,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:04,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:04,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180955589] [2021-06-16 18:19:04,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:04,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:04,116 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:04,784 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2021-06-16 18:19:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-16 18:19:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:04,786 INFO L225 Difference]: With dead ends: 137 [2021-06-16 18:19:04,786 INFO L226 Difference]: Without dead ends: 128 [2021-06-16 18:19:04,786 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 634.1ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-16 18:19:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-06-16 18:19:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2021-06-16 18:19:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2021-06-16 18:19:04,790 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 39 [2021-06-16 18:19:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:04,790 INFO L482 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2021-06-16 18:19:04,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2021-06-16 18:19:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:04,791 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:04,791 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:04,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-16 18:19:04,791 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1087255126, now seen corresponding path program 12 times [2021-06-16 18:19:04,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:04,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402677006] [2021-06-16 18:19:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:04,817 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:04,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:04,823 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:04,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:04,831 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:04,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:04,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:04,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:04,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:05,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:05,037 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:05,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:05,059 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:05,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:05,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:05,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402677006] [2021-06-16 18:19:05,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402677006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:05,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:05,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:05,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223628567] [2021-06-16 18:19:05,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:05,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:05,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:05,064 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:05,726 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2021-06-16 18:19:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 18:19:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:05,727 INFO L225 Difference]: With dead ends: 126 [2021-06-16 18:19:05,727 INFO L226 Difference]: Without dead ends: 115 [2021-06-16 18:19:05,727 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 620.2ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-16 18:19:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-06-16 18:19:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2021-06-16 18:19:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.231578947368421) internal successors, (117), 95 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2021-06-16 18:19:05,730 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 39 [2021-06-16 18:19:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:05,730 INFO L482 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2021-06-16 18:19:05,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2021-06-16 18:19:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:05,731 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:05,731 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:05,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-16 18:19:05,731 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:05,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1589765334, now seen corresponding path program 13 times [2021-06-16 18:19:05,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:05,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703453642] [2021-06-16 18:19:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:05,755 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:05,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:05,760 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:05,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:05,767 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:05,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:05,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:05,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:05,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:05,970 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:05,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:05,995 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:05,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:05,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:05,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:05,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:05,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703453642] [2021-06-16 18:19:05,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703453642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:05,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:05,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:05,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144429095] [2021-06-16 18:19:05,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:05,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:06,000 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:06,638 INFO L93 Difference]: Finished difference Result 134 states and 162 transitions. [2021-06-16 18:19:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 18:19:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:06,639 INFO L225 Difference]: With dead ends: 134 [2021-06-16 18:19:06,639 INFO L226 Difference]: Without dead ends: 125 [2021-06-16 18:19:06,639 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 595.0ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-16 18:19:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-06-16 18:19:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 101. [2021-06-16 18:19:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2021-06-16 18:19:06,642 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 39 [2021-06-16 18:19:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:06,643 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2021-06-16 18:19:06,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2021-06-16 18:19:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:06,643 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:06,643 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:06,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-16 18:19:06,643 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1270134472, now seen corresponding path program 14 times [2021-06-16 18:19:06,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:06,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883225687] [2021-06-16 18:19:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:06,666 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:06,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:06,671 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:06,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:06,679 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:06,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:06,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:06,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:06,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:06,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:06,884 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:06,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:06,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:06,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:06,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:06,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883225687] [2021-06-16 18:19:06,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883225687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:06,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:06,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:06,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721916400] [2021-06-16 18:19:06,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:06,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:06,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:06,889 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:07,492 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2021-06-16 18:19:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 18:19:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:07,495 INFO L225 Difference]: With dead ends: 133 [2021-06-16 18:19:07,495 INFO L226 Difference]: Without dead ends: 124 [2021-06-16 18:19:07,496 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 567.1ms TimeCoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-06-16 18:19:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2021-06-16 18:19:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 99 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2021-06-16 18:19:07,498 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 39 [2021-06-16 18:19:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:07,498 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2021-06-16 18:19:07,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2021-06-16 18:19:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:07,499 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:07,499 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:07,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-16 18:19:07,499 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:07,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1351533528, now seen corresponding path program 15 times [2021-06-16 18:19:07,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:07,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832475201] [2021-06-16 18:19:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:07,523 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:07,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:07,528 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:07,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:07,535 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:07,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:07,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:07,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:07,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:07,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:07,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:07,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:07,738 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:07,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:07,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:07,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:07,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:07,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832475201] [2021-06-16 18:19:07,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832475201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:07,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:07,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:07,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536573835] [2021-06-16 18:19:07,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:07,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:07,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:07,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:07,742 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:08,272 INFO L93 Difference]: Finished difference Result 122 states and 148 transitions. [2021-06-16 18:19:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:19:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:08,273 INFO L225 Difference]: With dead ends: 122 [2021-06-16 18:19:08,273 INFO L226 Difference]: Without dead ends: 94 [2021-06-16 18:19:08,274 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 521.1ms TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-06-16 18:19:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2021-06-16 18:19:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-06-16 18:19:08,276 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 39 [2021-06-16 18:19:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:08,276 INFO L482 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-06-16 18:19:08,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-06-16 18:19:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:08,277 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:08,277 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:08,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-16 18:19:08,277 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:08,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:08,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1363704234, now seen corresponding path program 16 times [2021-06-16 18:19:08,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:08,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317844904] [2021-06-16 18:19:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:08,298 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:08,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:08,303 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:08,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:08,310 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:08,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:08,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:08,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:08,469 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:19:08,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:08,475 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:08,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:08,494 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:08,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:08,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:08,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:08,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:08,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317844904] [2021-06-16 18:19:08,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317844904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:08,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:08,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:08,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890856105] [2021-06-16 18:19:08,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:08,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:08,498 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:09,085 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2021-06-16 18:19:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:19:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:09,086 INFO L225 Difference]: With dead ends: 123 [2021-06-16 18:19:09,087 INFO L226 Difference]: Without dead ends: 110 [2021-06-16 18:19:09,087 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 529.5ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-06-16 18:19:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2021-06-16 18:19:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 95 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2021-06-16 18:19:09,090 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 39 [2021-06-16 18:19:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:09,090 INFO L482 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2021-06-16 18:19:09,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2021-06-16 18:19:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:09,091 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:09,091 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:09,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-16 18:19:09,091 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1250766422, now seen corresponding path program 17 times [2021-06-16 18:19:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:09,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377663386] [2021-06-16 18:19:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:09,125 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:09,130 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:09,138 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:09,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:09,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:09,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:09,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:09,342 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:09,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:09,367 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:09,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:09,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:09,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:09,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:09,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377663386] [2021-06-16 18:19:09,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377663386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:09,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:09,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:09,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681100362] [2021-06-16 18:19:09,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:09,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:09,373 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:09,993 INFO L93 Difference]: Finished difference Result 130 states and 159 transitions. [2021-06-16 18:19:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 18:19:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:09,994 INFO L225 Difference]: With dead ends: 130 [2021-06-16 18:19:09,994 INFO L226 Difference]: Without dead ends: 121 [2021-06-16 18:19:09,995 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 611.9ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-16 18:19:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-06-16 18:19:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 98. [2021-06-16 18:19:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2021-06-16 18:19:09,997 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 39 [2021-06-16 18:19:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:09,998 INFO L482 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2021-06-16 18:19:09,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2021-06-16 18:19:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:09,998 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:09,998 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:09,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-16 18:19:09,998 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1609133384, now seen corresponding path program 18 times [2021-06-16 18:19:09,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:09,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547339883] [2021-06-16 18:19:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:10,020 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:10,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:10,025 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:10,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:10,032 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:10,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:10,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:10,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:10,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:10,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:10,258 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:10,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:10,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:10,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:10,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547339883] [2021-06-16 18:19:10,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547339883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:10,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:10,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:10,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990177002] [2021-06-16 18:19:10,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:10,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:10,263 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:10,934 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2021-06-16 18:19:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:19:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:10,935 INFO L225 Difference]: With dead ends: 119 [2021-06-16 18:19:10,935 INFO L226 Difference]: Without dead ends: 108 [2021-06-16 18:19:10,936 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 628.0ms TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-06-16 18:19:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2021-06-16 18:19:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 94 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2021-06-16 18:19:10,938 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 39 [2021-06-16 18:19:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:10,938 INFO L482 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2021-06-16 18:19:10,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2021-06-16 18:19:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:10,939 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:10,939 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:10,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-16 18:19:10,939 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1106623176, now seen corresponding path program 19 times [2021-06-16 18:19:10,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:10,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821635153] [2021-06-16 18:19:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:10,970 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:10,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:10,974 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:10,982 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:10,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:10,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:10,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:11,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:11,195 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:11,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:11,222 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:11,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:11,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:11,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:11,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821635153] [2021-06-16 18:19:11,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821635153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:11,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:11,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:11,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558165421] [2021-06-16 18:19:11,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:11,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:11,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:11,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:11,229 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:11,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:11,799 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2021-06-16 18:19:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:11,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:11,800 INFO L225 Difference]: With dead ends: 127 [2021-06-16 18:19:11,800 INFO L226 Difference]: Without dead ends: 118 [2021-06-16 18:19:11,801 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 597.8ms TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-06-16 18:19:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2021-06-16 18:19:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 99 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-06-16 18:19:11,803 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 39 [2021-06-16 18:19:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:11,803 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-06-16 18:19:11,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-06-16 18:19:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:11,804 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:11,804 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:11,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-16 18:19:11,804 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -328444314, now seen corresponding path program 20 times [2021-06-16 18:19:11,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:11,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246627369] [2021-06-16 18:19:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:11,822 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:11,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:11,827 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:11,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:11,834 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:11,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:11,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:11,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:12,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:12,049 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:12,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:12,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:12,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:12,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246627369] [2021-06-16 18:19:12,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246627369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:12,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:12,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:12,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189706416] [2021-06-16 18:19:12,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:12,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:12,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:12,054 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:12,624 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-06-16 18:19:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:12,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:12,630 INFO L225 Difference]: With dead ends: 126 [2021-06-16 18:19:12,630 INFO L226 Difference]: Without dead ends: 117 [2021-06-16 18:19:12,630 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 569.0ms TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-06-16 18:19:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2021-06-16 18:19:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 98 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2021-06-16 18:19:12,633 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 39 [2021-06-16 18:19:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:12,633 INFO L482 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2021-06-16 18:19:12,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2021-06-16 18:19:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:12,633 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:12,633 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:12,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-16 18:19:12,634 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:12,634 INFO L82 PathProgramCache]: Analyzing trace with hash -247045258, now seen corresponding path program 21 times [2021-06-16 18:19:12,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:12,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194393086] [2021-06-16 18:19:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:12,652 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:12,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:12,657 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:12,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:12,664 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:12,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:12,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:12,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:12,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:12,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:12,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:12,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:12,889 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:12,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:12,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:12,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:12,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:12,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194393086] [2021-06-16 18:19:12,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194393086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:12,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:12,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:12,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843236485] [2021-06-16 18:19:12,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:12,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:12,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:12,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:12,893 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:13,412 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2021-06-16 18:19:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:13,412 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:13,414 INFO L225 Difference]: With dead ends: 115 [2021-06-16 18:19:13,414 INFO L226 Difference]: Without dead ends: 85 [2021-06-16 18:19:13,414 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 544.7ms TimeCoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-06-16 18:19:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2021-06-16 18:19:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 78 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2021-06-16 18:19:13,416 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 39 [2021-06-16 18:19:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:13,416 INFO L482 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2021-06-16 18:19:13,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2021-06-16 18:19:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:13,417 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:13,417 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:13,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-16 18:19:13,417 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:13,417 INFO L82 PathProgramCache]: Analyzing trace with hash 134858538, now seen corresponding path program 22 times [2021-06-16 18:19:13,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:13,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943915957] [2021-06-16 18:19:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:13,436 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:13,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:13,441 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:13,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:13,448 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:13,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:13,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:13,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:13,628 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:19:13,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:13,632 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:13,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:13,664 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:13,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:13,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:13,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:13,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:13,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943915957] [2021-06-16 18:19:13,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943915957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:13,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:13,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:13,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308130331] [2021-06-16 18:19:13,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:13,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:13,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:13,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:13,669 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:14,217 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2021-06-16 18:19:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:14,219 INFO L225 Difference]: With dead ends: 128 [2021-06-16 18:19:14,219 INFO L226 Difference]: Without dead ends: 115 [2021-06-16 18:19:14,220 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 549.4ms TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-06-16 18:19:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2021-06-16 18:19:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2577319587628866) internal successors, (122), 97 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2021-06-16 18:19:14,222 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 122 transitions. Word has length 39 [2021-06-16 18:19:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:14,222 INFO L482 AbstractCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-06-16 18:19:14,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 122 transitions. [2021-06-16 18:19:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:14,223 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:14,223 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:14,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-16 18:19:14,223 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1815355178, now seen corresponding path program 23 times [2021-06-16 18:19:14,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:14,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381332505] [2021-06-16 18:19:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:14,242 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:14,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:14,246 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:14,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:14,253 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:14,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:14,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:14,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:14,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:14,436 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:14,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:14,457 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:14,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:14,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:14,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:14,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:14,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381332505] [2021-06-16 18:19:14,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381332505] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:14,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:14,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:14,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296727442] [2021-06-16 18:19:14,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:14,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:14,460 INFO L87 Difference]: Start difference. First operand 98 states and 122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:15,025 INFO L93 Difference]: Finished difference Result 135 states and 163 transitions. [2021-06-16 18:19:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 18:19:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:15,025 INFO L225 Difference]: With dead ends: 135 [2021-06-16 18:19:15,025 INFO L226 Difference]: Without dead ends: 126 [2021-06-16 18:19:15,026 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 561.9ms TimeCoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2021-06-16 18:19:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-06-16 18:19:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2021-06-16 18:19:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2525252525252526) internal successors, (124), 99 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2021-06-16 18:19:15,029 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 39 [2021-06-16 18:19:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:15,030 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2021-06-16 18:19:15,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2021-06-16 18:19:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:15,030 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:15,030 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:15,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-16 18:19:15,030 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash 380287688, now seen corresponding path program 24 times [2021-06-16 18:19:15,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:15,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641842742] [2021-06-16 18:19:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:15,049 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:15,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:15,054 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:15,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:15,061 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:15,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:15,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:15,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:15,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:15,287 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:15,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:15,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:15,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:15,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641842742] [2021-06-16 18:19:15,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641842742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:15,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:15,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:15,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306815228] [2021-06-16 18:19:15,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:15,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:15,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:15,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:15,292 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:15,898 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2021-06-16 18:19:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:15,899 INFO L225 Difference]: With dead ends: 124 [2021-06-16 18:19:15,899 INFO L226 Difference]: Without dead ends: 113 [2021-06-16 18:19:15,900 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 598.2ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-06-16 18:19:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2021-06-16 18:19:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2021-06-16 18:19:15,903 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 39 [2021-06-16 18:19:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:15,903 INFO L482 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2021-06-16 18:19:15,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2021-06-16 18:19:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:15,904 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:15,904 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:15,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-16 18:19:15,904 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:15,904 INFO L82 PathProgramCache]: Analyzing trace with hash -122222520, now seen corresponding path program 25 times [2021-06-16 18:19:15,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:15,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520985824] [2021-06-16 18:19:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:15,923 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:15,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:15,928 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:15,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:15,935 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:15,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:15,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:15,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:15,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:16,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:16,120 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:16,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:16,145 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:16,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:16,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:16,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:16,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520985824] [2021-06-16 18:19:16,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520985824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:16,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:16,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:16,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203959797] [2021-06-16 18:19:16,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:16,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:16,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:16,150 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:16,834 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2021-06-16 18:19:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:16,835 INFO L225 Difference]: With dead ends: 132 [2021-06-16 18:19:16,835 INFO L226 Difference]: Without dead ends: 123 [2021-06-16 18:19:16,835 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 649.9ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-06-16 18:19:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2021-06-16 18:19:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2021-06-16 18:19:16,838 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 39 [2021-06-16 18:19:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:16,838 INFO L482 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2021-06-16 18:19:16,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2021-06-16 18:19:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:16,838 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:16,838 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:16,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-16 18:19:16,839 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:16,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1557290010, now seen corresponding path program 26 times [2021-06-16 18:19:16,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:16,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825589924] [2021-06-16 18:19:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:16,856 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:16,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:16,861 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:16,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:16,868 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:16,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:16,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:16,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:16,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:17,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:17,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:17,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:17,067 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:17,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:17,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825589924] [2021-06-16 18:19:17,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825589924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:17,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:17,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:17,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475074980] [2021-06-16 18:19:17,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:17,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:17,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:17,071 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:17,590 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2021-06-16 18:19:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:17,591 INFO L225 Difference]: With dead ends: 131 [2021-06-16 18:19:17,591 INFO L226 Difference]: Without dead ends: 122 [2021-06-16 18:19:17,592 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 519.8ms TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-06-16 18:19:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2021-06-16 18:19:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.25) internal successors, (125), 100 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-06-16 18:19:17,594 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 39 [2021-06-16 18:19:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:17,594 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-06-16 18:19:17,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-06-16 18:19:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:17,595 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:17,595 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:17,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-16 18:19:17,595 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1475890954, now seen corresponding path program 27 times [2021-06-16 18:19:17,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:17,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183587682] [2021-06-16 18:19:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:17,613 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:17,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:17,617 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:17,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:17,625 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:17,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:17,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:17,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:17,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:17,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:17,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:17,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:17,845 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:17,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:17,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:17,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:17,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:17,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183587682] [2021-06-16 18:19:17,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183587682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:17,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:17,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:17,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645508678] [2021-06-16 18:19:17,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:17,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:17,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:17,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:17,850 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:18,334 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2021-06-16 18:19:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:18,335 INFO L225 Difference]: With dead ends: 120 [2021-06-16 18:19:18,335 INFO L226 Difference]: Without dead ends: 92 [2021-06-16 18:19:18,336 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 512.8ms TimeCoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-06-16 18:19:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-06-16 18:19:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 82 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-06-16 18:19:18,337 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 39 [2021-06-16 18:19:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:18,337 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-06-16 18:19:18,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2021-06-16 18:19:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:18,338 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:18,338 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:18,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-16 18:19:18,338 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1463720248, now seen corresponding path program 28 times [2021-06-16 18:19:18,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:18,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136420108] [2021-06-16 18:19:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:18,357 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:18,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:18,362 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:18,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:18,370 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:18,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:18,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:18,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:18,549 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:19:18,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:18,555 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:18,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:18,581 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:18,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:18,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:18,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:18,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:18,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136420108] [2021-06-16 18:19:18,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136420108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:18,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:18,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:18,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800514630] [2021-06-16 18:19:18,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:18,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:18,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:18,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:18,585 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:19,086 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2021-06-16 18:19:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:19,087 INFO L225 Difference]: With dead ends: 127 [2021-06-16 18:19:19,087 INFO L226 Difference]: Without dead ends: 114 [2021-06-16 18:19:19,087 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 525.0ms TimeCoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-06-16 18:19:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2021-06-16 18:19:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2021-06-16 18:19:19,090 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 39 [2021-06-16 18:19:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:19,090 INFO L482 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2021-06-16 18:19:19,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2021-06-16 18:19:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:19,090 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:19,090 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:19,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-16 18:19:19,091 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash 216776392, now seen corresponding path program 29 times [2021-06-16 18:19:19,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:19,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740617230] [2021-06-16 18:19:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:19,108 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:19,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:19,113 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:19,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:19,120 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:19,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:19,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:19,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:19,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:19,325 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:19,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:19,351 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:19,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:19,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:19,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:19,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740617230] [2021-06-16 18:19:19,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740617230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:19,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:19,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:19,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718865448] [2021-06-16 18:19:19,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:19,356 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:19,966 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2021-06-16 18:19:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 18:19:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:19,967 INFO L225 Difference]: With dead ends: 134 [2021-06-16 18:19:19,967 INFO L226 Difference]: Without dead ends: 125 [2021-06-16 18:19:19,967 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 604.2ms TimeCoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2021-06-16 18:19:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-06-16 18:19:19,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 99. [2021-06-16 18:19:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2021-06-16 18:19:19,970 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 39 [2021-06-16 18:19:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:19,970 INFO L482 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2021-06-16 18:19:19,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2021-06-16 18:19:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:19,970 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:19,970 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:19,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-16 18:19:19,970 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:19,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1218291098, now seen corresponding path program 30 times [2021-06-16 18:19:19,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:19,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746673103] [2021-06-16 18:19:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:19,987 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:19,992 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:19,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:19,999 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:20,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:20,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:20,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:20,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:20,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:20,204 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:20,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:20,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:20,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:20,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746673103] [2021-06-16 18:19:20,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746673103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:20,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:20,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:20,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021081858] [2021-06-16 18:19:20,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:20,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:20,207 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:20,726 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2021-06-16 18:19:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:20,727 INFO L225 Difference]: With dead ends: 123 [2021-06-16 18:19:20,727 INFO L226 Difference]: Without dead ends: 112 [2021-06-16 18:19:20,727 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 519.8ms TimeCoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-06-16 18:19:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2021-06-16 18:19:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.231578947368421) internal successors, (117), 95 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2021-06-16 18:19:20,729 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 39 [2021-06-16 18:19:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:20,729 INFO L482 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2021-06-16 18:19:20,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2021-06-16 18:19:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:20,729 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:20,729 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:20,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-16 18:19:20,730 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:20,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:20,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1720801306, now seen corresponding path program 31 times [2021-06-16 18:19:20,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:20,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077398077] [2021-06-16 18:19:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:20,747 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:20,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:20,751 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:20,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:20,758 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:20,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:20,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:20,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:20,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:20,949 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:20,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:20,973 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:20,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:20,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:20,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:20,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:20,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077398077] [2021-06-16 18:19:20,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077398077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:20,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:20,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:20,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227035842] [2021-06-16 18:19:20,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:20,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:20,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:20,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:20,977 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:21,602 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2021-06-16 18:19:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:21,603 INFO L225 Difference]: With dead ends: 131 [2021-06-16 18:19:21,603 INFO L226 Difference]: Without dead ends: 122 [2021-06-16 18:19:21,604 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 605.5ms TimeCoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-06-16 18:19:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2021-06-16 18:19:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2021-06-16 18:19:21,606 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 39 [2021-06-16 18:19:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:21,606 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2021-06-16 18:19:21,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:21,606 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2021-06-16 18:19:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:21,607 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:21,607 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:21,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-16 18:19:21,607 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1139098500, now seen corresponding path program 32 times [2021-06-16 18:19:21,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:21,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423191754] [2021-06-16 18:19:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:21,624 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:21,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:21,629 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:21,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:21,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:21,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:21,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:21,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:21,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:21,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:21,847 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:21,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:21,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:21,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:21,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:21,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423191754] [2021-06-16 18:19:21,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423191754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:21,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:21,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:21,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706643602] [2021-06-16 18:19:21,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:21,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:21,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:21,852 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:22,458 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2021-06-16 18:19:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 18:19:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:22,459 INFO L225 Difference]: With dead ends: 130 [2021-06-16 18:19:22,459 INFO L226 Difference]: Without dead ends: 121 [2021-06-16 18:19:22,459 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 575.2ms TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-06-16 18:19:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2021-06-16 18:19:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 99 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2021-06-16 18:19:22,461 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 39 [2021-06-16 18:19:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:22,462 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2021-06-16 18:19:22,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2021-06-16 18:19:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:22,462 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:22,462 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:22,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-16 18:19:22,463 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:22,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1220497556, now seen corresponding path program 33 times [2021-06-16 18:19:22,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:22,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932776421] [2021-06-16 18:19:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:22,480 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:22,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:22,485 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:22,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:22,492 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:22,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:22,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:22,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:22,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:22,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:22,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:22,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:22,693 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:22,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:22,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:22,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:22,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:22,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932776421] [2021-06-16 18:19:22,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932776421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:22,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:22,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:22,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897317635] [2021-06-16 18:19:22,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:22,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:22,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:22,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:22,699 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:23,205 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2021-06-16 18:19:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:23,206 INFO L225 Difference]: With dead ends: 119 [2021-06-16 18:19:23,206 INFO L226 Difference]: Without dead ends: 91 [2021-06-16 18:19:23,206 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 498.8ms TimeCoverageRelationStatistics Valid=114, Invalid=1008, Unknown=0, NotChecked=0, Total=1122 [2021-06-16 18:19:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-06-16 18:19:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-06-16 18:19:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2021-06-16 18:19:23,207 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 39 [2021-06-16 18:19:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:23,208 INFO L482 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2021-06-16 18:19:23,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2021-06-16 18:19:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:23,208 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:23,208 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:23,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-16 18:19:23,208 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:23,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1686066136, now seen corresponding path program 34 times [2021-06-16 18:19:23,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:23,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385656576] [2021-06-16 18:19:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:23,226 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:23,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:23,230 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:23,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:23,237 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:23,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:23,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:23,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:23,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-16 18:19:23,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:23,405 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:23,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:23,426 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:23,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:23,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:23,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:23,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:23,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385656576] [2021-06-16 18:19:23,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385656576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:23,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:23,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-16 18:19:23,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901910393] [2021-06-16 18:19:23,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-16 18:19:23,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:23,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-16 18:19:23,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-16 18:19:23,431 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:24,033 INFO L93 Difference]: Finished difference Result 120 states and 147 transitions. [2021-06-16 18:19:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:24,034 INFO L225 Difference]: With dead ends: 120 [2021-06-16 18:19:24,034 INFO L226 Difference]: Without dead ends: 107 [2021-06-16 18:19:24,035 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 568.1ms TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2021-06-16 18:19:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-06-16 18:19:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-06-16 18:19:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 98 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2021-06-16 18:19:24,037 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 39 [2021-06-16 18:19:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:24,037 INFO L482 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2021-06-16 18:19:24,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2021-06-16 18:19:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:24,038 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:24,038 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:24,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-16 18:19:24,038 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -928404520, now seen corresponding path program 35 times [2021-06-16 18:19:24,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:24,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846571480] [2021-06-16 18:19:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:24,056 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:24,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:24,061 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:24,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:24,068 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:24,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:24,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:24,249 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:24,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:24,269 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:24,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:24,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:24,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:24,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846571480] [2021-06-16 18:19:24,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846571480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:24,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:24,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:24,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779958665] [2021-06-16 18:19:24,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:24,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:24,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:24,273 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:24,835 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2021-06-16 18:19:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 18:19:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:24,835 INFO L225 Difference]: With dead ends: 127 [2021-06-16 18:19:24,835 INFO L226 Difference]: Without dead ends: 118 [2021-06-16 18:19:24,836 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 556.7ms TimeCoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2021-06-16 18:19:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-06-16 18:19:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2021-06-16 18:19:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.22) internal successors, (122), 100 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 122 transitions. [2021-06-16 18:19:24,839 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 122 transitions. Word has length 39 [2021-06-16 18:19:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:24,839 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 122 transitions. [2021-06-16 18:19:24,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 122 transitions. [2021-06-16 18:19:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:24,840 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:24,840 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:24,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-16 18:19:24,840 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1931495286, now seen corresponding path program 36 times [2021-06-16 18:19:24,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:24,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908598174] [2021-06-16 18:19:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:24,856 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:24,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:24,861 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:24,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:24,868 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:24,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:24,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:24,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:24,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:25,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:25,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:25,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:25,087 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:25,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:25,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:25,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:25,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908598174] [2021-06-16 18:19:25,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908598174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:25,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:25,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:25,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659162842] [2021-06-16 18:19:25,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:25,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:25,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:25,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:25,092 INFO L87 Difference]: Start difference. First operand 101 states and 122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:25,749 INFO L93 Difference]: Finished difference Result 116 states and 140 transitions. [2021-06-16 18:19:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:25,750 INFO L225 Difference]: With dead ends: 116 [2021-06-16 18:19:25,750 INFO L226 Difference]: Without dead ends: 105 [2021-06-16 18:19:25,751 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 606.8ms TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-06-16 18:19:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98. [2021-06-16 18:19:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2021-06-16 18:19:25,753 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 39 [2021-06-16 18:19:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:25,753 INFO L482 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2021-06-16 18:19:25,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2021-06-16 18:19:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:25,753 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:25,753 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:25,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-16 18:19:25,754 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:25,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1428985078, now seen corresponding path program 37 times [2021-06-16 18:19:25,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:25,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936926185] [2021-06-16 18:19:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:25,769 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:25,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:25,774 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:25,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:25,782 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:25,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:25,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:25,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:25,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:25,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:25,988 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 18:19:25,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:26,016 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:26,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:26,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:26,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:26,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936926185] [2021-06-16 18:19:26,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936926185] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:26,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:26,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:26,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883800860] [2021-06-16 18:19:26,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:26,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:26,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:26,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:26,021 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:26,646 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2021-06-16 18:19:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:26,647 INFO L225 Difference]: With dead ends: 124 [2021-06-16 18:19:26,647 INFO L226 Difference]: Without dead ends: 115 [2021-06-16 18:19:26,647 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 622.8ms TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2021-06-16 18:19:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-06-16 18:19:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 103. [2021-06-16 18:19:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 102 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2021-06-16 18:19:26,649 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 125 transitions. Word has length 39 [2021-06-16 18:19:26,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:26,650 INFO L482 AbstractCegarLoop]: Abstraction has 103 states and 125 transitions. [2021-06-16 18:19:26,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 125 transitions. [2021-06-16 18:19:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:26,650 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:26,650 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:26,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-16 18:19:26,650 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash -6082412, now seen corresponding path program 38 times [2021-06-16 18:19:26,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:26,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761876512] [2021-06-16 18:19:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:26,669 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:26,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:26,676 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:26,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:26,684 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:26,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:26,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:26,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:26,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 18:19:26,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:26,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:26,874 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:26,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:26,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:26,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761876512] [2021-06-16 18:19:26,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761876512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:26,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:26,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:26,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233340704] [2021-06-16 18:19:26,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:26,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:26,878 INFO L87 Difference]: Start difference. First operand 103 states and 125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:27,361 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2021-06-16 18:19:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-16 18:19:27,361 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:27,361 INFO L225 Difference]: With dead ends: 123 [2021-06-16 18:19:27,362 INFO L226 Difference]: Without dead ends: 114 [2021-06-16 18:19:27,362 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 485.7ms TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2021-06-16 18:19:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-06-16 18:19:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-06-16 18:19:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 101 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2021-06-16 18:19:27,364 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 39 [2021-06-16 18:19:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:27,364 INFO L482 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2021-06-16 18:19:27,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2021-06-16 18:19:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:27,364 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:27,365 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:27,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-16 18:19:27,365 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash 75316644, now seen corresponding path program 39 times [2021-06-16 18:19:27,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:27,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212945058] [2021-06-16 18:19:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:27,385 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 18:19:27,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:27,389 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:27,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:27,398 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-16 18:19:27,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 18:19:27,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 18:19:27,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:27,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-16 18:19:27,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 18:19:27,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 18:19:27,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 18:19:27,636 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-16 18:19:27,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 18:19:27,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:27,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:27,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:27,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212945058] [2021-06-16 18:19:27,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212945058] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:27,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:27,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-16 18:19:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438491292] [2021-06-16 18:19:27,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 18:19:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 18:19:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-16 18:19:27,641 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:28,125 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2021-06-16 18:19:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-16 18:19:28,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:28,129 INFO L225 Difference]: With dead ends: 112 [2021-06-16 18:19:28,129 INFO L226 Difference]: Without dead ends: 65 [2021-06-16 18:19:28,130 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 519.2ms TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2021-06-16 18:19:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-06-16 18:19:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-06-16 18:19:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2021-06-16 18:19:28,131 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 39 [2021-06-16 18:19:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:28,131 INFO L482 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2021-06-16 18:19:28,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2021-06-16 18:19:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 18:19:28,132 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:28,132 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:28,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-16 18:19:28,132 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:28,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 555051980, now seen corresponding path program 40 times [2021-06-16 18:19:28,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:28,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081396604] [2021-06-16 18:19:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:28,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:28,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 18:19:28,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:28,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:28,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:28,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081396604] [2021-06-16 18:19:28,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081396604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:28,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:28,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 18:19:28,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254823375] [2021-06-16 18:19:28,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 18:19:28,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:28,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 18:19:28,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:19:28,142 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:28,142 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-06-16 18:19:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 18:19:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-16 18:19:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:28,143 INFO L225 Difference]: With dead ends: 12 [2021-06-16 18:19:28,143 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 18:19:28,143 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 18:19:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 18:19:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 18:19:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 18:19:28,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-16 18:19:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:28,143 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 18:19:28,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 18:19:28,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 18:19:28,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-16 18:19:28,146 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 18:19:28,148 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 06:19:28 BasicIcfg [2021-06-16 18:19:28,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 18:19:28,148 INFO L168 Benchmark]: Toolchain (without parser) took 33421.27 ms. Allocated memory was 190.8 MB in the beginning and 377.5 MB in the end (delta: 186.6 MB). Free memory was 172.1 MB in the beginning and 209.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 150.7 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:28,148 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.51 ms. Allocated memory is still 190.8 MB. Free memory is still 173.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 18:19:28,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.57 ms. Allocated memory is still 190.8 MB. Free memory was 172.1 MB in the beginning and 170.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:28,150 INFO L168 Benchmark]: Boogie Preprocessor took 13.68 ms. Allocated memory is still 190.8 MB. Free memory was 170.6 MB in the beginning and 169.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:28,150 INFO L168 Benchmark]: RCFGBuilder took 285.99 ms. Allocated memory is still 190.8 MB. Free memory was 169.6 MB in the beginning and 156.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:28,150 INFO L168 Benchmark]: TraceAbstraction took 33088.06 ms. Allocated memory was 190.8 MB in the beginning and 377.5 MB in the end (delta: 186.6 MB). Free memory was 156.1 MB in the beginning and 209.2 MB in the end (delta: -53.1 MB). Peak memory consumption was 135.0 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:28,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.51 ms. Allocated memory is still 190.8 MB. Free memory is still 173.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.57 ms. Allocated memory is still 190.8 MB. Free memory was 172.1 MB in the beginning and 170.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.68 ms. Allocated memory is still 190.8 MB. Free memory was 170.6 MB in the beginning and 169.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 285.99 ms. Allocated memory is still 190.8 MB. Free memory was 169.6 MB in the beginning and 156.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33088.06 ms. Allocated memory was 190.8 MB in the beginning and 377.5 MB in the end (delta: 186.6 MB). Free memory was 156.1 MB in the beginning and 209.2 MB in the end (delta: -53.1 MB). Peak memory consumption was 135.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15632, positive: 15176, positive conditional: 15176, positive unconditional: 0, negative: 456, negative conditional: 456, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15631, positive: 15176, positive conditional: 0, positive unconditional: 15176, negative: 455, negative conditional: 0, negative unconditional: 455, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 378, positive: 364, positive conditional: 0, positive unconditional: 364, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 378, positive: 362, positive conditional: 0, positive unconditional: 362, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15631, positive: 14812, positive conditional: 0, positive unconditional: 14812, negative: 441, negative conditional: 0, negative unconditional: 441, unknown: 378, unknown conditional: 0, unknown unconditional: 378] , Statistics on independence cache: Total cache size (in pairs): 378, Positive cache size: 364, Positive conditional cache size: 0, Positive unconditional cache size: 364, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 1 - PositiveResult [Line: 79]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32921.0ms, OverallIterations: 40, TraceHistogramMax: 1, EmptinessCheckTime: 68.0ms, AutomataDifference: 22093.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 592.7ms, PartialOrderReductionTime: 581.8ms, HoareTripleCheckerStatistics: 1643 SDtfs, 2418 SDslu, 16498 SDs, 0 SdLazy, 16277 SolverSat, 636 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6642.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1352 GetRequests, 82 SyntacticMatches, 42 SemanticMatches, 1228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6190 ImplicationChecksByTransitivity, 20919.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5271occurred in iteration=0, InterpolantAutomatonStates: 891, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 141.3ms AutomataMinimizationTime, 40 MinimizatonAttempts, 632 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.4ms SsaConstructionTime, 178.1ms SatisfiabilityAnalysisTime, 9522.9ms InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1520 ConstructedInterpolants, 0 QuantifiedInterpolants, 22114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...