/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/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 01:06:46,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 01:06:47,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 01:06:47,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 01:06:47,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 01:06:47,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 01:06:47,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 01:06:47,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 01:06:47,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 01:06:47,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 01:06:47,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 01:06:47,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 01:06:47,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 01:06:47,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 01:06:47,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 01:06:47,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 01:06:47,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 01:06:47,076 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 [2021-07-14 01:06:47,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 01:06:47,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 01:06:47,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 01:06:47,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 01:06:47,109 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 01:06:47,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 01:06:47,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 01:06:47,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 01:06:47,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 01:06:47,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 01:06:47,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 01:06:47,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 01:06:47,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 01:06:47,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 01:06:47,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 01:06:47,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 01:06:47,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 01:06:47,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 01:06:47,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 01:06:47,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:06:47,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 01:06:47,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 01:06:47,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 01:06:47,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 01:06:47,113 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 01:06:47,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 01:06:47,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 01:06:47,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 01:06:47,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 01:06:47,405 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 01:06:47,406 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 01:06:47,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-07-14 01:06:47,407 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-07-14 01:06:47,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 01:06:47,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 01:06:47,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 01:06:47,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 01:06:47,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 01:06:47,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 01:06:47,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 01:06:47,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 01:06:47,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 01:06:47,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... [2021-07-14 01:06:47,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 01:06:47,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 01:06:47,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 01:06:47,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 01:06:47,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:06:47,636 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 01:06:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 01:06:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 01:06:47,639 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 01:06:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 01:06:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 01:06:47,639 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 01:06:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 01:06:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 01:06:47,640 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 01:06:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 01:06:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 01:06:47,641 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 01:06:47,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 01:06:47,892 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 01:06:47,893 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:06:47 BoogieIcfgContainer [2021-07-14 01:06:47,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 01:06:47,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 01:06:47,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 01:06:47,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 01:06:47,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:06:47" (1/2) ... [2021-07-14 01:06:47,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d3f81 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:06:47, skipping insertion in model container [2021-07-14 01:06:47,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:06:47" (2/2) ... [2021-07-14 01:06:47,899 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-07-14 01:06:47,902 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 01:06:47,902 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 01:06:47,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 01:06:47,903 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 01:06:47,933 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 01:06:47,949 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-14 01:06:47,973 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 01:06:47,973 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 01:06:47,973 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 01:06:47,973 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 01:06:47,973 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 01:06:47,974 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 01:06:47,974 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 01:06:47,974 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 01:06:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 3169 states, 2776 states have (on average 2.2579250720461097) internal successors, (6268), 3168 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:48,425 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:48,426 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:48,427 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:48,431 INFO L82 PathProgramCache]: Analyzing trace with hash 948112910, now seen corresponding path program 1 times [2021-07-14 01:06:48,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:48,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818494124] [2021-07-14 01:06:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:48,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:06:48,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:48,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:48,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:48,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:48,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818494124] [2021-07-14 01:06:48,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818494124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:48,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:48,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:48,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964341862] [2021-07-14 01:06:48,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:48,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:48,726 INFO L87 Difference]: Start difference. First operand has 3169 states, 2776 states have (on average 2.2579250720461097) internal successors, (6268), 3168 states have internal predecessors, (6268), 0 states have call successors, (0), 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 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:48,970 INFO L93 Difference]: Finished difference Result 4138 states and 7848 transitions. [2021-07-14 01:06:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:48,993 INFO L225 Difference]: With dead ends: 4138 [2021-07-14 01:06:48,994 INFO L226 Difference]: Without dead ends: 2975 [2021-07-14 01:06:48,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 167.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-07-14 01:06:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2479. [2021-07-14 01:06:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 2478 states have (on average 2.188458434221146) internal successors, (5423), 2478 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 5423 transitions. [2021-07-14 01:06:49,138 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 5423 transitions. Word has length 48 [2021-07-14 01:06:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:49,138 INFO L482 AbstractCegarLoop]: Abstraction has 2479 states and 5423 transitions. [2021-07-14 01:06:49,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 5423 transitions. [2021-07-14 01:06:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:49,146 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:49,146 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:49,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 01:06:49,146 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 386027290, now seen corresponding path program 2 times [2021-07-14 01:06:49,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:49,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038232706] [2021-07-14 01:06:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:49,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:49,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:49,263 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:06:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:49,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:49,277 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:49,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:49,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:49,298 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-14 01:06:49,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:49,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:49,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:49,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038232706] [2021-07-14 01:06:49,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038232706] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:49,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:49,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:06:49,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688967001] [2021-07-14 01:06:49,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:06:49,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:49,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:06:49,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:06:49,304 INFO L87 Difference]: Start difference. First operand 2479 states and 5423 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:49,446 INFO L93 Difference]: Finished difference Result 2753 states and 6053 transitions. [2021-07-14 01:06:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:06:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:49,457 INFO L225 Difference]: With dead ends: 2753 [2021-07-14 01:06:49,457 INFO L226 Difference]: Without dead ends: 2753 [2021-07-14 01:06:49,458 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:06:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-07-14 01:06:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2563. [2021-07-14 01:06:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.1834504293520687) internal successors, (5594), 2562 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 5594 transitions. [2021-07-14 01:06:49,548 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 5594 transitions. Word has length 48 [2021-07-14 01:06:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:49,549 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 5594 transitions. [2021-07-14 01:06:49,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 5594 transitions. [2021-07-14 01:06:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:49,558 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:49,561 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:49,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 01:06:49,561 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:49,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2071106810, now seen corresponding path program 3 times [2021-07-14 01:06:49,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:49,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331735111] [2021-07-14 01:06:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:49,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:49,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:49,678 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:06:49,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:49,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:49,695 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:49,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:49,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:49,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:49,728 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:49,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:49,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:49,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:49,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:49,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:49,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331735111] [2021-07-14 01:06:49,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331735111] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:49,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:49,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:06:49,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870639076] [2021-07-14 01:06:49,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:06:49,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:06:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:49,764 INFO L87 Difference]: Start difference. First operand 2563 states and 5594 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:50,113 INFO L93 Difference]: Finished difference Result 4203 states and 9509 transitions. [2021-07-14 01:06:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:50,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:50,129 INFO L225 Difference]: With dead ends: 4203 [2021-07-14 01:06:50,129 INFO L226 Difference]: Without dead ends: 4203 [2021-07-14 01:06:50,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2021-07-14 01:06:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3135. [2021-07-14 01:06:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3134 states have (on average 2.2102744097000637) internal successors, (6927), 3134 states have internal predecessors, (6927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 6927 transitions. [2021-07-14 01:06:50,246 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 6927 transitions. Word has length 48 [2021-07-14 01:06:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:50,246 INFO L482 AbstractCegarLoop]: Abstraction has 3135 states and 6927 transitions. [2021-07-14 01:06:50,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 6927 transitions. [2021-07-14 01:06:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:50,253 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:50,254 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:50,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 01:06:50,254 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:50,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1066806290, now seen corresponding path program 4 times [2021-07-14 01:06:50,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:50,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10708464] [2021-07-14 01:06:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,340 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:06:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:50,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:50,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10708464] [2021-07-14 01:06:50,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10708464] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:50,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:50,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:50,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345060058] [2021-07-14 01:06:50,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:50,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:50,352 INFO L87 Difference]: Start difference. First operand 3135 states and 6927 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:50,499 INFO L93 Difference]: Finished difference Result 3870 states and 8447 transitions. [2021-07-14 01:06:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:50,513 INFO L225 Difference]: With dead ends: 3870 [2021-07-14 01:06:50,514 INFO L226 Difference]: Without dead ends: 3581 [2021-07-14 01:06:50,514 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2021-07-14 01:06:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3037. [2021-07-14 01:06:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 2.19532279314888) internal successors, (6665), 3036 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 6665 transitions. [2021-07-14 01:06:50,630 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 6665 transitions. Word has length 48 [2021-07-14 01:06:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:50,630 INFO L482 AbstractCegarLoop]: Abstraction has 3037 states and 6665 transitions. [2021-07-14 01:06:50,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 6665 transitions. [2021-07-14 01:06:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:50,635 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:50,635 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:50,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 01:06:50,636 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:50,639 INFO L82 PathProgramCache]: Analyzing trace with hash -491516466, now seen corresponding path program 5 times [2021-07-14 01:06:50,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:50,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117543893] [2021-07-14 01:06:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:50,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:50,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:50,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:50,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:50,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117543893] [2021-07-14 01:06:50,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117543893] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:50,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:50,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:06:50,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014038195] [2021-07-14 01:06:50,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:06:50,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:06:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:50,683 INFO L87 Difference]: Start difference. First operand 3037 states and 6665 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:50,696 INFO L93 Difference]: Finished difference Result 2960 states and 6398 transitions. [2021-07-14 01:06:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:06:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:50,705 INFO L225 Difference]: With dead ends: 2960 [2021-07-14 01:06:50,705 INFO L226 Difference]: Without dead ends: 2902 [2021-07-14 01:06:50,707 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-07-14 01:06:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2883. [2021-07-14 01:06:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2882 states have (on average 2.182859125607217) internal successors, (6291), 2882 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 6291 transitions. [2021-07-14 01:06:50,786 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 6291 transitions. Word has length 48 [2021-07-14 01:06:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:50,786 INFO L482 AbstractCegarLoop]: Abstraction has 2883 states and 6291 transitions. [2021-07-14 01:06:50,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 6291 transitions. [2021-07-14 01:06:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:50,793 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:50,793 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:50,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 01:06:50,793 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:50,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1030004436, now seen corresponding path program 6 times [2021-07-14 01:06:50,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:50,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962340190] [2021-07-14 01:06:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:50,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:50,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:50,862 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-07-14 01:06:50,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:50,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:50,871 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:50,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:50,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:50,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:50,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:50,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:50,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:50,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962340190] [2021-07-14 01:06:50,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962340190] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:50,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:50,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:06:50,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186830830] [2021-07-14 01:06:50,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:06:50,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:06:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:06:50,895 INFO L87 Difference]: Start difference. First operand 2883 states and 6291 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:51,062 INFO L93 Difference]: Finished difference Result 2903 states and 6245 transitions. [2021-07-14 01:06:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:06:51,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:51,083 INFO L225 Difference]: With dead ends: 2903 [2021-07-14 01:06:51,083 INFO L226 Difference]: Without dead ends: 2770 [2021-07-14 01:06:51,083 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:06:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2021-07-14 01:06:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2694. [2021-07-14 01:06:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 2.1637578908280726) internal successors, (5827), 2693 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 5827 transitions. [2021-07-14 01:06:51,149 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 5827 transitions. Word has length 48 [2021-07-14 01:06:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:51,149 INFO L482 AbstractCegarLoop]: Abstraction has 2694 states and 5827 transitions. [2021-07-14 01:06:51,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 5827 transitions. [2021-07-14 01:06:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:51,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:51,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:51,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 01:06:51,154 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:51,154 INFO L82 PathProgramCache]: Analyzing trace with hash 699089088, now seen corresponding path program 7 times [2021-07-14 01:06:51,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:51,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022362197] [2021-07-14 01:06:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:51,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:51,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:51,223 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:06:51,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:51,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:51,235 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:51,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:51,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:51,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:51,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:51,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:51,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022362197] [2021-07-14 01:06:51,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022362197] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:51,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:51,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:06:51,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444991875] [2021-07-14 01:06:51,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:06:51,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:06:51,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:51,305 INFO L87 Difference]: Start difference. First operand 2694 states and 5827 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:51,577 INFO L93 Difference]: Finished difference Result 3304 states and 7134 transitions. [2021-07-14 01:06:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:51,584 INFO L225 Difference]: With dead ends: 3304 [2021-07-14 01:06:51,585 INFO L226 Difference]: Without dead ends: 3276 [2021-07-14 01:06:51,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:06:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-07-14 01:06:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2991. [2021-07-14 01:06:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 2.173244147157191) internal successors, (6498), 2990 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 6498 transitions. [2021-07-14 01:06:51,654 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 6498 transitions. Word has length 48 [2021-07-14 01:06:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:51,654 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 6498 transitions. [2021-07-14 01:06:51,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 6498 transitions. [2021-07-14 01:06:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:51,659 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:51,659 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:51,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 01:06:51,660 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:51,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1812864832, now seen corresponding path program 8 times [2021-07-14 01:06:51,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:51,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109614308] [2021-07-14 01:06:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:51,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:51,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:51,706 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:06:51,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:51,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:51,718 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:51,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:51,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:51,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:51,772 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-14 01:06:51,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:51,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:51,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:51,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:51,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109614308] [2021-07-14 01:06:51,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109614308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:51,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:51,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:06:51,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074716847] [2021-07-14 01:06:51,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:06:51,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:51,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:06:51,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:51,785 INFO L87 Difference]: Start difference. First operand 2991 states and 6498 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:52,135 INFO L93 Difference]: Finished difference Result 3276 states and 7058 transitions. [2021-07-14 01:06:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:06:52,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:52,141 INFO L225 Difference]: With dead ends: 3276 [2021-07-14 01:06:52,141 INFO L226 Difference]: Without dead ends: 3198 [2021-07-14 01:06:52,142 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-07-14 01:06:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3022. [2021-07-14 01:06:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.1694803045349222) internal successors, (6554), 3021 states have internal predecessors, (6554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 6554 transitions. [2021-07-14 01:06:52,222 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 6554 transitions. Word has length 48 [2021-07-14 01:06:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:52,222 INFO L482 AbstractCegarLoop]: Abstraction has 3022 states and 6554 transitions. [2021-07-14 01:06:52,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 6554 transitions. [2021-07-14 01:06:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:52,228 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:52,228 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:52,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 01:06:52,228 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash -841542846, now seen corresponding path program 9 times [2021-07-14 01:06:52,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:52,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900192982] [2021-07-14 01:06:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:52,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:52,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:52,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:52,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900192982] [2021-07-14 01:06:52,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900192982] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:52,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:52,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:06:52,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544636246] [2021-07-14 01:06:52,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:06:52,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:06:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:52,242 INFO L87 Difference]: Start difference. First operand 3022 states and 6554 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:52,254 INFO L93 Difference]: Finished difference Result 2976 states and 6298 transitions. [2021-07-14 01:06:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:06:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:52,259 INFO L225 Difference]: With dead ends: 2976 [2021-07-14 01:06:52,259 INFO L226 Difference]: Without dead ends: 2976 [2021-07-14 01:06:52,260 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-07-14 01:06:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2976. [2021-07-14 01:06:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 2.1169747899159663) internal successors, (6298), 2975 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 6298 transitions. [2021-07-14 01:06:52,327 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 6298 transitions. Word has length 48 [2021-07-14 01:06:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:52,327 INFO L482 AbstractCegarLoop]: Abstraction has 2976 states and 6298 transitions. [2021-07-14 01:06:52,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 6298 transitions. [2021-07-14 01:06:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:52,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:52,331 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:52,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 01:06:52,332 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash -452929622, now seen corresponding path program 10 times [2021-07-14 01:06:52,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:52,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175119572] [2021-07-14 01:06:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:52,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:06:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:52,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:52,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175119572] [2021-07-14 01:06:52,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175119572] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:52,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:52,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:52,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840692578] [2021-07-14 01:06:52,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:52,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:52,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:52,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:52,390 INFO L87 Difference]: Start difference. First operand 2976 states and 6298 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:52,550 INFO L93 Difference]: Finished difference Result 3442 states and 7200 transitions. [2021-07-14 01:06:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:52,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:52,557 INFO L225 Difference]: With dead ends: 3442 [2021-07-14 01:06:52,557 INFO L226 Difference]: Without dead ends: 3298 [2021-07-14 01:06:52,558 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-07-14 01:06:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2946. [2021-07-14 01:06:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2945 states have (on average 2.1157894736842104) internal successors, (6231), 2945 states have internal predecessors, (6231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 6231 transitions. [2021-07-14 01:06:52,641 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 6231 transitions. Word has length 48 [2021-07-14 01:06:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:52,641 INFO L482 AbstractCegarLoop]: Abstraction has 2946 states and 6231 transitions. [2021-07-14 01:06:52,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 6231 transitions. [2021-07-14 01:06:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:52,645 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:52,645 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:52,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 01:06:52,646 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1011328342, now seen corresponding path program 11 times [2021-07-14 01:06:52,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:52,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035474425] [2021-07-14 01:06:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:52,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:52,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:52,696 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-07-14 01:06:52,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:52,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:52,709 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:52,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:52,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:52,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:52,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,765 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-14 01:06:52,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:52,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:52,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:52,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:52,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035474425] [2021-07-14 01:06:52,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035474425] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:52,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:52,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:52,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444351129] [2021-07-14 01:06:52,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:52,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:52,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:52,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:52,777 INFO L87 Difference]: Start difference. First operand 2946 states and 6231 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:52,973 INFO L93 Difference]: Finished difference Result 3481 states and 7409 transitions. [2021-07-14 01:06:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:06:52,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:52,979 INFO L225 Difference]: With dead ends: 3481 [2021-07-14 01:06:52,979 INFO L226 Difference]: Without dead ends: 3386 [2021-07-14 01:06:52,979 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:06:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-07-14 01:06:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3360. [2021-07-14 01:06:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 2.1384340577552843) internal successors, (7183), 3359 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 7183 transitions. [2021-07-14 01:06:53,057 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 7183 transitions. Word has length 48 [2021-07-14 01:06:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:53,057 INFO L482 AbstractCegarLoop]: Abstraction has 3360 states and 7183 transitions. [2021-07-14 01:06:53,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 7183 transitions. [2021-07-14 01:06:53,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:53,062 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:53,063 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:53,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-14 01:06:53,063 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash -558908748, now seen corresponding path program 12 times [2021-07-14 01:06:53,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:53,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636225368] [2021-07-14 01:06:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:53,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:53,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:53,112 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:06:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:53,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:53,122 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:53,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:53,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:53,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636225368] [2021-07-14 01:06:53,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636225368] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:53,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:53,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:06:53,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075031459] [2021-07-14 01:06:53,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:06:53,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:06:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:53,187 INFO L87 Difference]: Start difference. First operand 3360 states and 7183 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:53,420 INFO L93 Difference]: Finished difference Result 3380 states and 7223 transitions. [2021-07-14 01:06:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:53,426 INFO L225 Difference]: With dead ends: 3380 [2021-07-14 01:06:53,426 INFO L226 Difference]: Without dead ends: 3142 [2021-07-14 01:06:53,426 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:06:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2021-07-14 01:06:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3130. [2021-07-14 01:06:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 2.1431767337807606) internal successors, (6706), 3129 states have internal predecessors, (6706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 6706 transitions. [2021-07-14 01:06:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 6706 transitions. Word has length 48 [2021-07-14 01:06:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:53,507 INFO L482 AbstractCegarLoop]: Abstraction has 3130 states and 6706 transitions. [2021-07-14 01:06:53,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 6706 transitions. [2021-07-14 01:06:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:53,512 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:53,512 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:53,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-14 01:06:53,513 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:53,513 INFO L82 PathProgramCache]: Analyzing trace with hash -443161004, now seen corresponding path program 13 times [2021-07-14 01:06:53,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:53,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716144480] [2021-07-14 01:06:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:53,555 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-07-14 01:06:53,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:53,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:53,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:53,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:53,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716144480] [2021-07-14 01:06:53,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716144480] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:53,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:53,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:06:53,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947592697] [2021-07-14 01:06:53,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:06:53,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:53,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:06:53,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:06:53,577 INFO L87 Difference]: Start difference. First operand 3130 states and 6706 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:53,731 INFO L93 Difference]: Finished difference Result 4973 states and 10851 transitions. [2021-07-14 01:06:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:06:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:53,746 INFO L225 Difference]: With dead ends: 4973 [2021-07-14 01:06:53,746 INFO L226 Difference]: Without dead ends: 4866 [2021-07-14 01:06:53,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2021-07-14 01:06:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3486. [2021-07-14 01:06:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 2.157245337159254) internal successors, (7518), 3485 states have internal predecessors, (7518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 7518 transitions. [2021-07-14 01:06:53,834 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 7518 transitions. Word has length 48 [2021-07-14 01:06:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:53,834 INFO L482 AbstractCegarLoop]: Abstraction has 3486 states and 7518 transitions. [2021-07-14 01:06:53,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 7518 transitions. [2021-07-14 01:06:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:53,840 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:53,840 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:53,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-14 01:06:53,840 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash 333324854, now seen corresponding path program 14 times [2021-07-14 01:06:53,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:53,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311930688] [2021-07-14 01:06:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:53,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:53,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:53,913 INFO L142 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-07-14 01:06:53,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:06:53,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:53,928 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-14 01:06:53,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:53,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:53,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:53,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:53,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:53,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311930688] [2021-07-14 01:06:53,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311930688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:53,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:53,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:53,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372075935] [2021-07-14 01:06:53,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:53,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:53,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:53,966 INFO L87 Difference]: Start difference. First operand 3486 states and 7518 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:54,138 INFO L93 Difference]: Finished difference Result 5376 states and 11685 transitions. [2021-07-14 01:06:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:06:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:54,145 INFO L225 Difference]: With dead ends: 5376 [2021-07-14 01:06:54,145 INFO L226 Difference]: Without dead ends: 5226 [2021-07-14 01:06:54,146 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-14 01:06:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-07-14 01:06:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4040. [2021-07-14 01:06:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 4039 states have (on average 2.166377816291161) internal successors, (8750), 4039 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 8750 transitions. [2021-07-14 01:06:54,250 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 8750 transitions. Word has length 48 [2021-07-14 01:06:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:54,250 INFO L482 AbstractCegarLoop]: Abstraction has 4040 states and 8750 transitions. [2021-07-14 01:06:54,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 8750 transitions. [2021-07-14 01:06:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:54,256 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:54,256 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:54,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-14 01:06:54,256 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1369475846, now seen corresponding path program 15 times [2021-07-14 01:06:54,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:54,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968817714] [2021-07-14 01:06:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:54,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:54,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:54,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:54,309 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-07-14 01:06:54,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:06:54,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:54,320 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-14 01:06:54,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:54,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:54,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:54,344 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-14 01:06:54,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:54,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:54,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:54,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968817714] [2021-07-14 01:06:54,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968817714] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:54,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:54,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:54,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865461325] [2021-07-14 01:06:54,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:54,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:54,361 INFO L87 Difference]: Start difference. First operand 4040 states and 8750 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:54,560 INFO L93 Difference]: Finished difference Result 4819 states and 10450 transitions. [2021-07-14 01:06:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:06:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:54,566 INFO L225 Difference]: With dead ends: 4819 [2021-07-14 01:06:54,566 INFO L226 Difference]: Without dead ends: 4710 [2021-07-14 01:06:54,567 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-14 01:06:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-07-14 01:06:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4001. [2021-07-14 01:06:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 2.165) internal successors, (8660), 4000 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 8660 transitions. [2021-07-14 01:06:54,646 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 8660 transitions. Word has length 48 [2021-07-14 01:06:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:54,646 INFO L482 AbstractCegarLoop]: Abstraction has 4001 states and 8660 transitions. [2021-07-14 01:06:54,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 8660 transitions. [2021-07-14 01:06:54,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:54,651 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:54,651 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:54,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-14 01:06:54,652 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:54,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1058984642, now seen corresponding path program 16 times [2021-07-14 01:06:54,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:54,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278597288] [2021-07-14 01:06:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:54,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:54,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:54,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:54,706 INFO L142 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-07-14 01:06:54,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:06:54,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:54,722 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-14 01:06:54,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:54,737 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-14 01:06:54,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:54,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:54,759 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-14 01:06:54,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:54,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:54,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:54,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:54,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278597288] [2021-07-14 01:06:54,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278597288] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:54,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:54,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:54,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505215887] [2021-07-14 01:06:54,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:54,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:54,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:54,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:54,768 INFO L87 Difference]: Start difference. First operand 4001 states and 8660 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:54,922 INFO L93 Difference]: Finished difference Result 4753 states and 10282 transitions. [2021-07-14 01:06:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:06:54,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:54,928 INFO L225 Difference]: With dead ends: 4753 [2021-07-14 01:06:54,928 INFO L226 Difference]: Without dead ends: 4627 [2021-07-14 01:06:54,929 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-14 01:06:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-07-14 01:06:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3921. [2021-07-14 01:06:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3920 states have (on average 2.150765306122449) internal successors, (8431), 3920 states have internal predecessors, (8431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 8431 transitions. [2021-07-14 01:06:55,028 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 8431 transitions. Word has length 48 [2021-07-14 01:06:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:55,028 INFO L482 AbstractCegarLoop]: Abstraction has 3921 states and 8431 transitions. [2021-07-14 01:06:55,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 8431 transitions. [2021-07-14 01:06:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:55,034 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:55,034 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:55,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-14 01:06:55,035 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:55,035 INFO L82 PathProgramCache]: Analyzing trace with hash -643816058, now seen corresponding path program 17 times [2021-07-14 01:06:55,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:55,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496895299] [2021-07-14 01:06:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:55,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:55,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:55,090 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-07-14 01:06:55,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:06:55,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,103 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-14 01:06:55,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:55,113 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-14 01:06:55,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:55,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:55,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:55,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:55,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:55,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496895299] [2021-07-14 01:06:55,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496895299] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:55,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:55,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792642198] [2021-07-14 01:06:55,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:55,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:55,143 INFO L87 Difference]: Start difference. First operand 3921 states and 8431 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:55,324 INFO L93 Difference]: Finished difference Result 4488 states and 9505 transitions. [2021-07-14 01:06:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:06:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:55,329 INFO L225 Difference]: With dead ends: 4488 [2021-07-14 01:06:55,330 INFO L226 Difference]: Without dead ends: 4125 [2021-07-14 01:06:55,330 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-14 01:06:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-07-14 01:06:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 3151. [2021-07-14 01:06:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3151 states, 3150 states have (on average 2.1142857142857143) internal successors, (6660), 3150 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 6660 transitions. [2021-07-14 01:06:55,394 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 6660 transitions. Word has length 48 [2021-07-14 01:06:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:55,394 INFO L482 AbstractCegarLoop]: Abstraction has 3151 states and 6660 transitions. [2021-07-14 01:06:55,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 6660 transitions. [2021-07-14 01:06:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:55,398 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:55,398 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:55,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-14 01:06:55,399 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1722484080, now seen corresponding path program 18 times [2021-07-14 01:06:55,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:55,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031567593] [2021-07-14 01:06:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:55,417 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-07-14 01:06:55,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:06:55,431 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-14 01:06:55,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,435 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-14 01:06:55,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:55,441 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-07-14 01:06:55,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:55,442 INFO L142 QuantifierPusher]: treesize reduction 23, result has 23.3 percent of original size [2021-07-14 01:06:55,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:55,447 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-14 01:06:55,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:06:55,460 INFO L142 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size [2021-07-14 01:06:55,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:06:55,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:55,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:55,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031567593] [2021-07-14 01:06:55,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031567593] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:55,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:55,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:06:55,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536320001] [2021-07-14 01:06:55,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:06:55,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:55,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:06:55,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:06:55,476 INFO L87 Difference]: Start difference. First operand 3151 states and 6660 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:55,561 INFO L93 Difference]: Finished difference Result 3720 states and 7709 transitions. [2021-07-14 01:06:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:06:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:55,565 INFO L225 Difference]: With dead ends: 3720 [2021-07-14 01:06:55,565 INFO L226 Difference]: Without dead ends: 3482 [2021-07-14 01:06:55,566 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:06:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-07-14 01:06:55,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3280. [2021-07-14 01:06:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3279 states have (on average 2.1027752363525467) internal successors, (6895), 3279 states have internal predecessors, (6895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 6895 transitions. [2021-07-14 01:06:55,623 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 6895 transitions. Word has length 48 [2021-07-14 01:06:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:55,623 INFO L482 AbstractCegarLoop]: Abstraction has 3280 states and 6895 transitions. [2021-07-14 01:06:55,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 6895 transitions. [2021-07-14 01:06:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:55,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:55,627 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:55,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-14 01:06:55,628 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash -512589246, now seen corresponding path program 19 times [2021-07-14 01:06:55,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:55,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387335019] [2021-07-14 01:06:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:55,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:55,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:55,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:55,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:55,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:55,677 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-07-14 01:06:55,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:55,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:55,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:55,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:55,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:55,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387335019] [2021-07-14 01:06:55,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387335019] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:55,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:55,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:06:55,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456507526] [2021-07-14 01:06:55,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:06:55,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:55,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:06:55,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:06:55,694 INFO L87 Difference]: Start difference. First operand 3280 states and 6895 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:55,904 INFO L93 Difference]: Finished difference Result 4813 states and 10070 transitions. [2021-07-14 01:06:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:06:55,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:55,910 INFO L225 Difference]: With dead ends: 4813 [2021-07-14 01:06:55,910 INFO L226 Difference]: Without dead ends: 4658 [2021-07-14 01:06:55,911 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:06:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-07-14 01:06:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3327. [2021-07-14 01:06:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 2.097113650030066) internal successors, (6975), 3326 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 6975 transitions. [2021-07-14 01:06:55,985 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 6975 transitions. Word has length 48 [2021-07-14 01:06:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:55,985 INFO L482 AbstractCegarLoop]: Abstraction has 3327 states and 6975 transitions. [2021-07-14 01:06:55,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 6975 transitions. [2021-07-14 01:06:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:55,993 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:55,993 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:55,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-14 01:06:55,993 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:55,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash 632319524, now seen corresponding path program 20 times [2021-07-14 01:06:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:55,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686655871] [2021-07-14 01:06:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:56,034 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-07-14 01:06:56,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:06:56,045 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-14 01:06:56,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:56,048 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-14 01:06:56,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:56,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-14 01:06:56,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:06:56,073 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-07-14 01:06:56,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:06:56,085 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-07-14 01:06:56,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:06:56,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:06:56,122 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-07-14 01:06:56,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:56,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:56,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:56,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:56,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686655871] [2021-07-14 01:06:56,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686655871] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:56,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:56,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:56,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965839415] [2021-07-14 01:06:56,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:56,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:56,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:56,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:56,153 INFO L87 Difference]: Start difference. First operand 3327 states and 6975 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:56,483 INFO L93 Difference]: Finished difference Result 4259 states and 8823 transitions. [2021-07-14 01:06:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:06:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:56,489 INFO L225 Difference]: With dead ends: 4259 [2021-07-14 01:06:56,489 INFO L226 Difference]: Without dead ends: 3918 [2021-07-14 01:06:56,490 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 202.5ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-07-14 01:06:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3051. [2021-07-14 01:06:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3050 states have (on average 2.1104918032786886) internal successors, (6437), 3050 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 6437 transitions. [2021-07-14 01:06:56,549 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 6437 transitions. Word has length 48 [2021-07-14 01:06:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:56,549 INFO L482 AbstractCegarLoop]: Abstraction has 3051 states and 6437 transitions. [2021-07-14 01:06:56,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 6437 transitions. [2021-07-14 01:06:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:56,552 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:56,552 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:56,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-14 01:06:56,553 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1140700604, now seen corresponding path program 21 times [2021-07-14 01:06:56,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:56,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753787179] [2021-07-14 01:06:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:56,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:56,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:56,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:56,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:56,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753787179] [2021-07-14 01:06:56,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753787179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:56,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:56,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:06:56,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104072562] [2021-07-14 01:06:56,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:06:56,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:56,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:06:56,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:56,566 INFO L87 Difference]: Start difference. First operand 3051 states and 6437 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:56,577 INFO L93 Difference]: Finished difference Result 2960 states and 6096 transitions. [2021-07-14 01:06:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:06:56,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:56,581 INFO L225 Difference]: With dead ends: 2960 [2021-07-14 01:06:56,581 INFO L226 Difference]: Without dead ends: 2955 [2021-07-14 01:06:56,581 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:06:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-07-14 01:06:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2955. [2021-07-14 01:06:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2954 states have (on average 2.0619498984427893) internal successors, (6091), 2954 states have internal predecessors, (6091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6091 transitions. [2021-07-14 01:06:56,626 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6091 transitions. Word has length 48 [2021-07-14 01:06:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:56,626 INFO L482 AbstractCegarLoop]: Abstraction has 2955 states and 6091 transitions. [2021-07-14 01:06:56,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6091 transitions. [2021-07-14 01:06:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:56,629 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:56,629 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:56,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-14 01:06:56,629 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2017493028, now seen corresponding path program 22 times [2021-07-14 01:06:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:56,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375351082] [2021-07-14 01:06:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:56,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:56,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:56,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:56,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:56,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:56,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:56,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:56,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:56,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:56,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:56,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:56,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375351082] [2021-07-14 01:06:56,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375351082] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:56,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:56,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:56,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025622679] [2021-07-14 01:06:56,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:56,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:56,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:56,718 INFO L87 Difference]: Start difference. First operand 2955 states and 6091 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:57,011 INFO L93 Difference]: Finished difference Result 5590 states and 11465 transitions. [2021-07-14 01:06:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 01:06:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:57,019 INFO L225 Difference]: With dead ends: 5590 [2021-07-14 01:06:57,019 INFO L226 Difference]: Without dead ends: 5198 [2021-07-14 01:06:57,019 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2021-07-14 01:06:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 3031. [2021-07-14 01:06:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3030 states have (on average 2.067986798679868) internal successors, (6266), 3030 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 6266 transitions. [2021-07-14 01:06:57,081 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 6266 transitions. Word has length 48 [2021-07-14 01:06:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:57,081 INFO L482 AbstractCegarLoop]: Abstraction has 3031 states and 6266 transitions. [2021-07-14 01:06:57,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 6266 transitions. [2021-07-14 01:06:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:57,085 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:57,085 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:57,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-14 01:06:57,085 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:57,086 INFO L82 PathProgramCache]: Analyzing trace with hash -827009502, now seen corresponding path program 23 times [2021-07-14 01:06:57,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:57,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840612190] [2021-07-14 01:06:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:57,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:57,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:06:57,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:06:57,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,126 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-07-14 01:06:57,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:06:57,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,150 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-14 01:06:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:57,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:57,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:57,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840612190] [2021-07-14 01:06:57,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840612190] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:57,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:57,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:57,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664890950] [2021-07-14 01:06:57,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:57,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:57,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:57,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:57,160 INFO L87 Difference]: Start difference. First operand 3031 states and 6266 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:57,632 INFO L93 Difference]: Finished difference Result 6113 states and 12864 transitions. [2021-07-14 01:06:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 01:06:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:57,641 INFO L225 Difference]: With dead ends: 6113 [2021-07-14 01:06:57,641 INFO L226 Difference]: Without dead ends: 6113 [2021-07-14 01:06:57,641 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2021-07-14 01:06:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-07-14 01:06:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 3104. [2021-07-14 01:06:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3103 states have (on average 2.0592974540767) internal successors, (6390), 3103 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 6390 transitions. [2021-07-14 01:06:57,709 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 6390 transitions. Word has length 48 [2021-07-14 01:06:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:57,709 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 6390 transitions. [2021-07-14 01:06:57,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 6390 transitions. [2021-07-14 01:06:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:57,713 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:57,713 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:57,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-14 01:06:57,713 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1542292836, now seen corresponding path program 24 times [2021-07-14 01:06:57,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:57,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302285185] [2021-07-14 01:06:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:57,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:06:57,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:57,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:57,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302285185] [2021-07-14 01:06:57,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302285185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:57,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:57,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:57,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603129546] [2021-07-14 01:06:57,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:57,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:57,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:57,780 INFO L87 Difference]: Start difference. First operand 3104 states and 6390 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:57,898 INFO L93 Difference]: Finished difference Result 3482 states and 7122 transitions. [2021-07-14 01:06:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:57,903 INFO L225 Difference]: With dead ends: 3482 [2021-07-14 01:06:57,903 INFO L226 Difference]: Without dead ends: 3383 [2021-07-14 01:06:57,904 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2021-07-14 01:06:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3081. [2021-07-14 01:06:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 3080 states have (on average 2.0594155844155844) internal successors, (6343), 3080 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 6343 transitions. [2021-07-14 01:06:57,952 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 6343 transitions. Word has length 48 [2021-07-14 01:06:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:57,952 INFO L482 AbstractCegarLoop]: Abstraction has 3081 states and 6343 transitions. [2021-07-14 01:06:57,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 6343 transitions. [2021-07-14 01:06:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:57,956 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:57,956 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:57,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-14 01:06:57,956 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:57,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1998275908, now seen corresponding path program 25 times [2021-07-14 01:06:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:57,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248289678] [2021-07-14 01:06:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:57,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:57,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:57,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,020 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-07-14 01:06:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:06:58,024 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-14 01:06:58,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,025 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-14 01:06:58,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-14 01:06:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:58,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:58,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:58,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248289678] [2021-07-14 01:06:58,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248289678] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:58,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:58,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:58,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958787821] [2021-07-14 01:06:58,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:58,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:58,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:58,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:58,043 INFO L87 Difference]: Start difference. First operand 3081 states and 6343 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:58,222 INFO L93 Difference]: Finished difference Result 3549 states and 7178 transitions. [2021-07-14 01:06:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:58,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:58,226 INFO L225 Difference]: With dead ends: 3549 [2021-07-14 01:06:58,226 INFO L226 Difference]: Without dead ends: 3472 [2021-07-14 01:06:58,227 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-07-14 01:06:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 3020. [2021-07-14 01:06:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3019 states have (on average 2.057634978469692) internal successors, (6212), 3019 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6212 transitions. [2021-07-14 01:06:58,272 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6212 transitions. Word has length 48 [2021-07-14 01:06:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:58,272 INFO L482 AbstractCegarLoop]: Abstraction has 3020 states and 6212 transitions. [2021-07-14 01:06:58,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6212 transitions. [2021-07-14 01:06:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:58,275 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:58,275 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:58,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-14 01:06:58,275 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash -331331486, now seen corresponding path program 26 times [2021-07-14 01:06:58,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:58,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515612079] [2021-07-14 01:06:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:58,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-07-14 01:06:58,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-14 01:06:58,313 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-07-14 01:06:58,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:58,315 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-07-14 01:06:58,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:58,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:06:58,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:06:58,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-07-14 01:06:58,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-14 01:06:58,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-07-14 01:06:58,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:06:58,385 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-07-14 01:06:58,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:58,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:58,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:58,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515612079] [2021-07-14 01:06:58,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515612079] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:58,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:58,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:58,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846705579] [2021-07-14 01:06:58,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:58,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:58,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:58,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:58,395 INFO L87 Difference]: Start difference. First operand 3020 states and 6212 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:58,695 INFO L93 Difference]: Finished difference Result 4081 states and 8291 transitions. [2021-07-14 01:06:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 01:06:58,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:58,701 INFO L225 Difference]: With dead ends: 4081 [2021-07-14 01:06:58,701 INFO L226 Difference]: Without dead ends: 4031 [2021-07-14 01:06:58,701 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:06:58,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-07-14 01:06:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 3346. [2021-07-14 01:06:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3345 states have (on average 2.0568011958146486) internal successors, (6880), 3345 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 6880 transitions. [2021-07-14 01:06:58,756 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 6880 transitions. Word has length 48 [2021-07-14 01:06:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:58,756 INFO L482 AbstractCegarLoop]: Abstraction has 3346 states and 6880 transitions. [2021-07-14 01:06:58,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 6880 transitions. [2021-07-14 01:06:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:58,760 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:58,760 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:58,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-14 01:06:58,760 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:58,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1765157458, now seen corresponding path program 27 times [2021-07-14 01:06:58,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:58,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532385396] [2021-07-14 01:06:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:58,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:58,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,786 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-07-14 01:06:58,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-14 01:06:58,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:58,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-14 01:06:58,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:58,803 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-14 01:06:58,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:58,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:58,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:58,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532385396] [2021-07-14 01:06:58,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532385396] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:58,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:58,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:06:58,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420762309] [2021-07-14 01:06:58,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:06:58,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:06:58,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:06:58,805 INFO L87 Difference]: Start difference. First operand 3346 states and 6880 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:58,880 INFO L93 Difference]: Finished difference Result 4354 states and 8914 transitions. [2021-07-14 01:06:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 01:06:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:58,885 INFO L225 Difference]: With dead ends: 4354 [2021-07-14 01:06:58,886 INFO L226 Difference]: Without dead ends: 4051 [2021-07-14 01:06:58,886 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:06:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-07-14 01:06:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3670. [2021-07-14 01:06:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 2.0545107658762607) internal successors, (7538), 3669 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 7538 transitions. [2021-07-14 01:06:58,944 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 7538 transitions. Word has length 48 [2021-07-14 01:06:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:58,944 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 7538 transitions. [2021-07-14 01:06:58,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 7538 transitions. [2021-07-14 01:06:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:58,949 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:58,949 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:58,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-14 01:06:58,949 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -654451362, now seen corresponding path program 28 times [2021-07-14 01:06:58,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:58,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883572631] [2021-07-14 01:06:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:58,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 46.0 percent of original size [2021-07-14 01:06:58,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:06:58,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:58,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:58,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:58,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:58,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:58,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,005 INFO L142 QuantifierPusher]: treesize reduction 22, result has 42.1 percent of original size [2021-07-14 01:06:59,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:59,015 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-07-14 01:06:59,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:59,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:59,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:59,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:59,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:59,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883572631] [2021-07-14 01:06:59,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883572631] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:59,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:59,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:06:59,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720840774] [2021-07-14 01:06:59,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:06:59,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:59,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:06:59,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:06:59,045 INFO L87 Difference]: Start difference. First operand 3670 states and 7538 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:59,371 INFO L93 Difference]: Finished difference Result 6322 states and 12978 transitions. [2021-07-14 01:06:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 01:06:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:59,380 INFO L225 Difference]: With dead ends: 6322 [2021-07-14 01:06:59,380 INFO L226 Difference]: Without dead ends: 6075 [2021-07-14 01:06:59,380 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-07-14 01:06:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3776. [2021-07-14 01:06:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3775 states have (on average 2.0508609271523177) internal successors, (7742), 3775 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 7742 transitions. [2021-07-14 01:06:59,484 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 7742 transitions. Word has length 48 [2021-07-14 01:06:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:59,484 INFO L482 AbstractCegarLoop]: Abstraction has 3776 states and 7742 transitions. [2021-07-14 01:06:59,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 7742 transitions. [2021-07-14 01:06:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:59,490 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:59,490 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:59,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-14 01:06:59,491 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1215634792, now seen corresponding path program 29 times [2021-07-14 01:06:59,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:59,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076824851] [2021-07-14 01:06:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:59,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:06:59,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:06:59,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:59,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:59,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076824851] [2021-07-14 01:06:59,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076824851] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:59,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:59,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:06:59,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877677952] [2021-07-14 01:06:59,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:06:59,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:06:59,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:06:59,561 INFO L87 Difference]: Start difference. First operand 3776 states and 7742 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:06:59,703 INFO L93 Difference]: Finished difference Result 4200 states and 8577 transitions. [2021-07-14 01:06:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:06:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:06:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:06:59,710 INFO L225 Difference]: With dead ends: 4200 [2021-07-14 01:06:59,710 INFO L226 Difference]: Without dead ends: 3904 [2021-07-14 01:06:59,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:06:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-07-14 01:06:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3646. [2021-07-14 01:06:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 2.03840877914952) internal successors, (7430), 3645 states have internal predecessors, (7430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 7430 transitions. [2021-07-14 01:06:59,781 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 7430 transitions. Word has length 48 [2021-07-14 01:06:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:06:59,781 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 7430 transitions. [2021-07-14 01:06:59,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:06:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 7430 transitions. [2021-07-14 01:06:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:06:59,787 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:06:59,787 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:06:59,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-14 01:06:59,787 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:06:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:06:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1536140604, now seen corresponding path program 30 times [2021-07-14 01:06:59,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:06:59,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848711619] [2021-07-14 01:06:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:06:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:06:59,830 INFO L142 QuantifierPusher]: treesize reduction 27, result has 49.1 percent of original size [2021-07-14 01:06:59,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:06:59,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:59,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:59,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 01:06:59,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:06:59,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:06:59,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:06:59,882 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:06:59,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:59,892 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-07-14 01:06:59,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:06:59,902 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-07-14 01:06:59,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:06:59,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:06:59,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:06:59,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:06:59,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:06:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:06:59,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:06:59,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848711619] [2021-07-14 01:06:59,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848711619] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:06:59,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:06:59,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:06:59,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539184539] [2021-07-14 01:06:59,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:06:59,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:06:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:06:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:06:59,934 INFO L87 Difference]: Start difference. First operand 3646 states and 7430 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:00,181 INFO L93 Difference]: Finished difference Result 4796 states and 9533 transitions. [2021-07-14 01:07:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:00,186 INFO L225 Difference]: With dead ends: 4796 [2021-07-14 01:07:00,186 INFO L226 Difference]: Without dead ends: 4562 [2021-07-14 01:07:00,186 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2021-07-14 01:07:00,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 3589. [2021-07-14 01:07:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3588 states have (on average 2.027870680044593) internal successors, (7276), 3588 states have internal predecessors, (7276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 7276 transitions. [2021-07-14 01:07:00,241 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 7276 transitions. Word has length 48 [2021-07-14 01:07:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:00,241 INFO L482 AbstractCegarLoop]: Abstraction has 3589 states and 7276 transitions. [2021-07-14 01:07:00,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 7276 transitions. [2021-07-14 01:07:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:00,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:00,245 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:00,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-14 01:07:00,245 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1235734712, now seen corresponding path program 31 times [2021-07-14 01:07:00,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:00,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280816274] [2021-07-14 01:07:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:00,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:00,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:00,280 INFO L142 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-07-14 01:07:00,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:07:00,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:00,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:00,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:07:00,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:07:00,302 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-14 01:07:00,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:00,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:00,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:00,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:00,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:00,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280816274] [2021-07-14 01:07:00,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280816274] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:00,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:00,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:07:00,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423005364] [2021-07-14 01:07:00,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:07:00,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:07:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:00,333 INFO L87 Difference]: Start difference. First operand 3589 states and 7276 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:00,678 INFO L93 Difference]: Finished difference Result 4385 states and 8598 transitions. [2021-07-14 01:07:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 01:07:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:00,683 INFO L225 Difference]: With dead ends: 4385 [2021-07-14 01:07:00,683 INFO L226 Difference]: Without dead ends: 4064 [2021-07-14 01:07:00,683 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 154.6ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-14 01:07:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-07-14 01:07:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3273. [2021-07-14 01:07:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3273 states, 3272 states have (on average 2.0189486552567235) internal successors, (6606), 3272 states have internal predecessors, (6606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 6606 transitions. [2021-07-14 01:07:00,732 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 6606 transitions. Word has length 48 [2021-07-14 01:07:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:00,732 INFO L482 AbstractCegarLoop]: Abstraction has 3273 states and 6606 transitions. [2021-07-14 01:07:00,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 6606 transitions. [2021-07-14 01:07:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:00,735 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:00,735 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:00,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-14 01:07:00,736 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:00,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2051407108, now seen corresponding path program 32 times [2021-07-14 01:07:00,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:00,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511548207] [2021-07-14 01:07:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:00,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:00,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:00,762 INFO L142 QuantifierPusher]: treesize reduction 21, result has 54.3 percent of original size [2021-07-14 01:07:00,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-14 01:07:00,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:00,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:00,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:07:00,775 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-07-14 01:07:00,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:07:00,782 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-14 01:07:00,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:00,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:00,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:00,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511548207] [2021-07-14 01:07:00,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511548207] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:00,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:00,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:07:00,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619648522] [2021-07-14 01:07:00,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:07:00,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:07:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:07:00,784 INFO L87 Difference]: Start difference. First operand 3273 states and 6606 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:00,884 INFO L93 Difference]: Finished difference Result 4019 states and 8086 transitions. [2021-07-14 01:07:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:07:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:00,889 INFO L225 Difference]: With dead ends: 4019 [2021-07-14 01:07:00,889 INFO L226 Difference]: Without dead ends: 3453 [2021-07-14 01:07:00,890 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:07:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-07-14 01:07:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3095. [2021-07-14 01:07:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 2.0190691661279896) internal successors, (6247), 3094 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 6247 transitions. [2021-07-14 01:07:00,938 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 6247 transitions. Word has length 48 [2021-07-14 01:07:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:00,938 INFO L482 AbstractCegarLoop]: Abstraction has 3095 states and 6247 transitions. [2021-07-14 01:07:00,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 6247 transitions. [2021-07-14 01:07:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:00,942 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:00,942 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:00,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-14 01:07:00,942 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:00,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1581858588, now seen corresponding path program 33 times [2021-07-14 01:07:00,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:00,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602378197] [2021-07-14 01:07:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:00,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:00,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,005 INFO L142 QuantifierPusher]: treesize reduction 6, result has 84.2 percent of original size [2021-07-14 01:07:01,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-14 01:07:01,026 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-07-14 01:07:01,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-14 01:07:01,051 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-07-14 01:07:01,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-14 01:07:01,078 INFO L142 QuantifierPusher]: treesize reduction 26, result has 52.7 percent of original size [2021-07-14 01:07:01,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-14 01:07:01,101 INFO L142 QuantifierPusher]: treesize reduction 38, result has 38.7 percent of original size [2021-07-14 01:07:01,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-14 01:07:01,115 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-14 01:07:01,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,117 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-14 01:07:01,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:01,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:01,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602378197] [2021-07-14 01:07:01,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602378197] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:01,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:01,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:01,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955136382] [2021-07-14 01:07:01,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:01,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:01,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:01,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:01,126 INFO L87 Difference]: Start difference. First operand 3095 states and 6247 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:01,337 INFO L93 Difference]: Finished difference Result 3309 states and 6656 transitions. [2021-07-14 01:07:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:07:01,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:01,341 INFO L225 Difference]: With dead ends: 3309 [2021-07-14 01:07:01,341 INFO L226 Difference]: Without dead ends: 3206 [2021-07-14 01:07:01,341 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:07:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-07-14 01:07:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3045. [2021-07-14 01:07:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 2.0177398160315376) internal successors, (6142), 3044 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 6142 transitions. [2021-07-14 01:07:01,387 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 6142 transitions. Word has length 48 [2021-07-14 01:07:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:01,387 INFO L482 AbstractCegarLoop]: Abstraction has 3045 states and 6142 transitions. [2021-07-14 01:07:01,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 6142 transitions. [2021-07-14 01:07:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:01,391 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:01,391 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:01,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-14 01:07:01,391 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:01,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2067485192, now seen corresponding path program 34 times [2021-07-14 01:07:01,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:01,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609464175] [2021-07-14 01:07:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:01,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:01,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:01,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,430 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-07-14 01:07:01,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:01,434 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-07-14 01:07:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:07:01,438 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-07-14 01:07:01,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:01,447 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-14 01:07:01,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,453 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-07-14 01:07:01,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:01,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:01,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609464175] [2021-07-14 01:07:01,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609464175] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:01,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:01,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:01,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411036072] [2021-07-14 01:07:01,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:01,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:01,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:01,461 INFO L87 Difference]: Start difference. First operand 3045 states and 6142 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:01,587 INFO L93 Difference]: Finished difference Result 3287 states and 6510 transitions. [2021-07-14 01:07:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:01,591 INFO L225 Difference]: With dead ends: 3287 [2021-07-14 01:07:01,591 INFO L226 Difference]: Without dead ends: 3189 [2021-07-14 01:07:01,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:07:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-07-14 01:07:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2832. [2021-07-14 01:07:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 2.009184033910279) internal successors, (5688), 2831 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 5688 transitions. [2021-07-14 01:07:01,631 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 5688 transitions. Word has length 48 [2021-07-14 01:07:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:01,631 INFO L482 AbstractCegarLoop]: Abstraction has 2832 states and 5688 transitions. [2021-07-14 01:07:01,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 5688 transitions. [2021-07-14 01:07:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:01,634 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:01,635 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:01,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-14 01:07:01,635 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash -777017338, now seen corresponding path program 35 times [2021-07-14 01:07:01,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:01,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247319051] [2021-07-14 01:07:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:01,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:01,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:01,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:01,682 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-07-14 01:07:01,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:07:01,691 INFO L142 QuantifierPusher]: treesize reduction 21, result has 55.3 percent of original size [2021-07-14 01:07:01,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:07:01,695 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-14 01:07:01,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,699 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-14 01:07:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,704 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-14 01:07:01,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:01,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:01,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:01,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247319051] [2021-07-14 01:07:01,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247319051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:01,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:01,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:07:01,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562014155] [2021-07-14 01:07:01,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:07:01,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:01,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:07:01,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:07:01,712 INFO L87 Difference]: Start difference. First operand 2832 states and 5688 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:01,790 INFO L93 Difference]: Finished difference Result 2656 states and 5157 transitions. [2021-07-14 01:07:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:07:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:01,795 INFO L225 Difference]: With dead ends: 2656 [2021-07-14 01:07:01,795 INFO L226 Difference]: Without dead ends: 2140 [2021-07-14 01:07:01,796 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:07:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-07-14 01:07:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1737. [2021-07-14 01:07:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1736 states have (on average 1.9855990783410138) internal successors, (3447), 1736 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 3447 transitions. [2021-07-14 01:07:01,819 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 3447 transitions. Word has length 48 [2021-07-14 01:07:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:01,819 INFO L482 AbstractCegarLoop]: Abstraction has 1737 states and 3447 transitions. [2021-07-14 01:07:01,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 3447 transitions. [2021-07-14 01:07:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:01,821 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:01,821 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:01,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-14 01:07:01,821 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:01,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1445474532, now seen corresponding path program 36 times [2021-07-14 01:07:01,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:01,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828701201] [2021-07-14 01:07:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:01,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:01,852 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-07-14 01:07:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:07:01,873 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-07-14 01:07:01,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-14 01:07:01,898 INFO L142 QuantifierPusher]: treesize reduction 26, result has 39.5 percent of original size [2021-07-14 01:07:01,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:07:01,908 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-07-14 01:07:01,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:07:01,920 INFO L142 QuantifierPusher]: treesize reduction 24, result has 27.3 percent of original size [2021-07-14 01:07:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:01,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-14 01:07:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,928 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-14 01:07:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:01,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:01,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:01,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828701201] [2021-07-14 01:07:01,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828701201] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:01,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:01,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:01,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110233902] [2021-07-14 01:07:01,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:01,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:01,930 INFO L87 Difference]: Start difference. First operand 1737 states and 3447 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:02,126 INFO L93 Difference]: Finished difference Result 2105 states and 4140 transitions. [2021-07-14 01:07:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:07:02,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:02,128 INFO L225 Difference]: With dead ends: 2105 [2021-07-14 01:07:02,128 INFO L226 Difference]: Without dead ends: 2018 [2021-07-14 01:07:02,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-07-14 01:07:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1726. [2021-07-14 01:07:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.983768115942029) internal successors, (3422), 1725 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 3422 transitions. [2021-07-14 01:07:02,150 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 3422 transitions. Word has length 48 [2021-07-14 01:07:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:02,150 INFO L482 AbstractCegarLoop]: Abstraction has 1726 states and 3422 transitions. [2021-07-14 01:07:02,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 3422 transitions. [2021-07-14 01:07:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:02,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:02,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:02,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-14 01:07:02,154 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:02,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:02,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1429783800, now seen corresponding path program 37 times [2021-07-14 01:07:02,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:02,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058262847] [2021-07-14 01:07:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:02,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,192 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-14 01:07:02,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-14 01:07:02,227 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.8 percent of original size [2021-07-14 01:07:02,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-14 01:07:02,248 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-07-14 01:07:02,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-14 01:07:02,273 INFO L142 QuantifierPusher]: treesize reduction 26, result has 52.7 percent of original size [2021-07-14 01:07:02,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-14 01:07:02,295 INFO L142 QuantifierPusher]: treesize reduction 38, result has 38.7 percent of original size [2021-07-14 01:07:02,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-14 01:07:02,309 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-14 01:07:02,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,310 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-14 01:07:02,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:02,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:02,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058262847] [2021-07-14 01:07:02,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058262847] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:02,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:02,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:02,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125845678] [2021-07-14 01:07:02,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:02,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:02,312 INFO L87 Difference]: Start difference. First operand 1726 states and 3422 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:02,521 INFO L93 Difference]: Finished difference Result 1974 states and 3893 transitions. [2021-07-14 01:07:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:02,523 INFO L225 Difference]: With dead ends: 1974 [2021-07-14 01:07:02,523 INFO L226 Difference]: Without dead ends: 1906 [2021-07-14 01:07:02,523 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-07-14 01:07:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1714. [2021-07-14 01:07:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.9830706363105663) internal successors, (3397), 1713 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 3397 transitions. [2021-07-14 01:07:02,544 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 3397 transitions. Word has length 48 [2021-07-14 01:07:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:02,544 INFO L482 AbstractCegarLoop]: Abstraction has 1714 states and 3397 transitions. [2021-07-14 01:07:02,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 3397 transitions. [2021-07-14 01:07:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:02,546 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:02,546 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:02,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-14 01:07:02,546 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:02,546 INFO L82 PathProgramCache]: Analyzing trace with hash -593042646, now seen corresponding path program 38 times [2021-07-14 01:07:02,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:02,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513505216] [2021-07-14 01:07:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:02,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,577 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-14 01:07:02,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-14 01:07:02,610 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.8 percent of original size [2021-07-14 01:07:02,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-14 01:07:02,630 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-07-14 01:07:02,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:07:02,650 INFO L142 QuantifierPusher]: treesize reduction 16, result has 62.8 percent of original size [2021-07-14 01:07:02,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-14 01:07:02,667 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-14 01:07:02,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:07:02,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-14 01:07:02,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,679 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-14 01:07:02,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:02,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:02,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513505216] [2021-07-14 01:07:02,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513505216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:02,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:02,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:02,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473378811] [2021-07-14 01:07:02,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:02,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:02,681 INFO L87 Difference]: Start difference. First operand 1714 states and 3397 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:02,889 INFO L93 Difference]: Finished difference Result 2072 states and 4073 transitions. [2021-07-14 01:07:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:02,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:02,892 INFO L225 Difference]: With dead ends: 2072 [2021-07-14 01:07:02,892 INFO L226 Difference]: Without dead ends: 1965 [2021-07-14 01:07:02,892 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-07-14 01:07:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1694. [2021-07-14 01:07:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1693 states have (on average 1.9875959834613113) internal successors, (3365), 1693 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 3365 transitions. [2021-07-14 01:07:02,912 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 3365 transitions. Word has length 48 [2021-07-14 01:07:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:02,913 INFO L482 AbstractCegarLoop]: Abstraction has 1694 states and 3365 transitions. [2021-07-14 01:07:02,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 3365 transitions. [2021-07-14 01:07:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:02,914 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:02,914 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:02,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-14 01:07:02,915 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:02,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:02,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1967998914, now seen corresponding path program 39 times [2021-07-14 01:07:02,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:02,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836437926] [2021-07-14 01:07:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:02,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:02,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:02,946 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-14 01:07:02,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-14 01:07:02,975 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size [2021-07-14 01:07:02,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-14 01:07:03,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-07-14 01:07:03,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:07:03,020 INFO L142 QuantifierPusher]: treesize reduction 16, result has 62.8 percent of original size [2021-07-14 01:07:03,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-14 01:07:03,039 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-14 01:07:03,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:07:03,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-14 01:07:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,053 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-14 01:07:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:03,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:03,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836437926] [2021-07-14 01:07:03,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836437926] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:03,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:03,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:03,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262214156] [2021-07-14 01:07:03,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:03,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:03,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:03,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:03,055 INFO L87 Difference]: Start difference. First operand 1694 states and 3365 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:03,333 INFO L93 Difference]: Finished difference Result 2302 states and 4629 transitions. [2021-07-14 01:07:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:07:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:03,337 INFO L225 Difference]: With dead ends: 2302 [2021-07-14 01:07:03,337 INFO L226 Difference]: Without dead ends: 2201 [2021-07-14 01:07:03,337 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 232.7ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-07-14 01:07:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1655. [2021-07-14 01:07:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 1.9933494558645708) internal successors, (3297), 1654 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 3297 transitions. [2021-07-14 01:07:03,361 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 3297 transitions. Word has length 48 [2021-07-14 01:07:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:03,361 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 3297 transitions. [2021-07-14 01:07:03,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 3297 transitions. [2021-07-14 01:07:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:03,363 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:03,363 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:03,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-14 01:07:03,364 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 586810438, now seen corresponding path program 40 times [2021-07-14 01:07:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:03,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837921543] [2021-07-14 01:07:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:03,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:03,392 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-14 01:07:03,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:03,398 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-07-14 01:07:03,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:03,403 INFO L142 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-07-14 01:07:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:03,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:03,412 INFO L142 QuantifierPusher]: treesize reduction 12, result has 66.7 percent of original size [2021-07-14 01:07:03,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-14 01:07:03,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-14 01:07:03,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:03,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:03,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837921543] [2021-07-14 01:07:03,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837921543] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:03,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:03,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:07:03,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242829189] [2021-07-14 01:07:03,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:07:03,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:03,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:07:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:03,449 INFO L87 Difference]: Start difference. First operand 1655 states and 3297 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:03,607 INFO L93 Difference]: Finished difference Result 1935 states and 3857 transitions. [2021-07-14 01:07:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:07:03,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:03,609 INFO L225 Difference]: With dead ends: 1935 [2021-07-14 01:07:03,609 INFO L226 Difference]: Without dead ends: 1728 [2021-07-14 01:07:03,609 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:07:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-07-14 01:07:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1453. [2021-07-14 01:07:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 2.0516528925619837) internal successors, (2979), 1452 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2979 transitions. [2021-07-14 01:07:03,625 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2979 transitions. Word has length 48 [2021-07-14 01:07:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:03,625 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 2979 transitions. [2021-07-14 01:07:03,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2979 transitions. [2021-07-14 01:07:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:03,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:03,627 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:03,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-14 01:07:03,627 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1951114426, now seen corresponding path program 41 times [2021-07-14 01:07:03,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:03,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762767735] [2021-07-14 01:07:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:03,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:03,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-14 01:07:03,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:07:03,668 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-07-14 01:07:03,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-14 01:07:03,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-07-14 01:07:03,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-14 01:07:03,703 INFO L142 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size [2021-07-14 01:07:03,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-14 01:07:03,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-07-14 01:07:03,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-14 01:07:03,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-07-14 01:07:03,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-14 01:07:03,753 INFO L142 QuantifierPusher]: treesize reduction 39, result has 35.0 percent of original size [2021-07-14 01:07:03,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-14 01:07:03,766 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-14 01:07:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:03,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:03,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762767735] [2021-07-14 01:07:03,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762767735] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:03,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:03,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:07:03,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905355340] [2021-07-14 01:07:03,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:07:03,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:03,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:07:03,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:03,769 INFO L87 Difference]: Start difference. First operand 1453 states and 2979 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:03,976 INFO L93 Difference]: Finished difference Result 1599 states and 3245 transitions. [2021-07-14 01:07:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:03,978 INFO L225 Difference]: With dead ends: 1599 [2021-07-14 01:07:03,978 INFO L226 Difference]: Without dead ends: 1572 [2021-07-14 01:07:03,978 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 187.6ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:07:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-07-14 01:07:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1471. [2021-07-14 01:07:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 2.0564625850340135) internal successors, (3023), 1470 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 3023 transitions. [2021-07-14 01:07:03,993 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 3023 transitions. Word has length 48 [2021-07-14 01:07:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:03,993 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 3023 transitions. [2021-07-14 01:07:03,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 3023 transitions. [2021-07-14 01:07:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:03,995 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:03,995 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:03,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-14 01:07:03,995 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1128884470, now seen corresponding path program 42 times [2021-07-14 01:07:03,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:03,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644535841] [2021-07-14 01:07:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:04,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 01:07:04,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:04,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:04,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644535841] [2021-07-14 01:07:04,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644535841] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:04,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:04,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:07:04,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186594956] [2021-07-14 01:07:04,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:07:04,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:07:04,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:04,067 INFO L87 Difference]: Start difference. First operand 1471 states and 3023 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:04,173 INFO L93 Difference]: Finished difference Result 1519 states and 3091 transitions. [2021-07-14 01:07:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:04,175 INFO L225 Difference]: With dead ends: 1519 [2021-07-14 01:07:04,175 INFO L226 Difference]: Without dead ends: 1157 [2021-07-14 01:07:04,175 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:07:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-07-14 01:07:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1129. [2021-07-14 01:07:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 1.9937943262411348) internal successors, (2249), 1128 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2249 transitions. [2021-07-14 01:07:04,186 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2249 transitions. Word has length 48 [2021-07-14 01:07:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:04,186 INFO L482 AbstractCegarLoop]: Abstraction has 1129 states and 2249 transitions. [2021-07-14 01:07:04,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2249 transitions. [2021-07-14 01:07:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:04,187 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:04,187 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:04,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-14 01:07:04,188 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash -776113352, now seen corresponding path program 43 times [2021-07-14 01:07:04,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:04,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653315490] [2021-07-14 01:07:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:04,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:04,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:04,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-14 01:07:04,243 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-07-14 01:07:04,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:07:04,255 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-07-14 01:07:04,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:04,267 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 01:07:04,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:04,277 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 01:07:04,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:04,278 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-07-14 01:07:04,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:04,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:04,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:04,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:04,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653315490] [2021-07-14 01:07:04,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653315490] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:04,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:04,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:07:04,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370335248] [2021-07-14 01:07:04,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:07:04,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:07:04,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:07:04,298 INFO L87 Difference]: Start difference. First operand 1129 states and 2249 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:04,419 INFO L93 Difference]: Finished difference Result 1307 states and 2589 transitions. [2021-07-14 01:07:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:07:04,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:04,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:04,421 INFO L225 Difference]: With dead ends: 1307 [2021-07-14 01:07:04,421 INFO L226 Difference]: Without dead ends: 875 [2021-07-14 01:07:04,422 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-07-14 01:07:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 866. [2021-07-14 01:07:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.9745664739884392) internal successors, (1708), 865 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1708 transitions. [2021-07-14 01:07:04,432 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1708 transitions. Word has length 48 [2021-07-14 01:07:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:04,433 INFO L482 AbstractCegarLoop]: Abstraction has 866 states and 1708 transitions. [2021-07-14 01:07:04,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1708 transitions. [2021-07-14 01:07:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:04,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:04,434 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:04,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-14 01:07:04,434 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1777274646, now seen corresponding path program 44 times [2021-07-14 01:07:04,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:04,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954631551] [2021-07-14 01:07:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:04,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:04,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,459 INFO L142 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-07-14 01:07:04,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:04,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:04,471 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-07-14 01:07:04,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:04,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:04,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:04,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954631551] [2021-07-14 01:07:04,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954631551] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:04,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:04,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:04,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288225403] [2021-07-14 01:07:04,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:04,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:04,484 INFO L87 Difference]: Start difference. First operand 866 states and 1708 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:04,596 INFO L93 Difference]: Finished difference Result 1045 states and 2075 transitions. [2021-07-14 01:07:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:04,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:04,597 INFO L225 Difference]: With dead ends: 1045 [2021-07-14 01:07:04,597 INFO L226 Difference]: Without dead ends: 621 [2021-07-14 01:07:04,597 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-07-14 01:07:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 595. [2021-07-14 01:07:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 1.936026936026936) internal successors, (1150), 594 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1150 transitions. [2021-07-14 01:07:04,603 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1150 transitions. Word has length 48 [2021-07-14 01:07:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:04,603 INFO L482 AbstractCegarLoop]: Abstraction has 595 states and 1150 transitions. [2021-07-14 01:07:04,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1150 transitions. [2021-07-14 01:07:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:04,604 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:04,604 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:04,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-14 01:07:04,604 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:04,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash 806901600, now seen corresponding path program 45 times [2021-07-14 01:07:04,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:04,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422799160] [2021-07-14 01:07:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:04,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:04,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 37.9 percent of original size [2021-07-14 01:07:04,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-14 01:07:04,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:04,633 INFO L142 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-07-14 01:07:04,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,637 INFO L142 QuantifierPusher]: treesize reduction 15, result has 37.5 percent of original size [2021-07-14 01:07:04,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:04,643 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-07-14 01:07:04,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:04,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:04,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:04,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422799160] [2021-07-14 01:07:04,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422799160] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:04,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:04,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:07:04,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926714084] [2021-07-14 01:07:04,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:07:04,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:07:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:07:04,652 INFO L87 Difference]: Start difference. First operand 595 states and 1150 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:04,770 INFO L93 Difference]: Finished difference Result 1129 states and 2226 transitions. [2021-07-14 01:07:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 01:07:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:04,771 INFO L225 Difference]: With dead ends: 1129 [2021-07-14 01:07:04,771 INFO L226 Difference]: Without dead ends: 911 [2021-07-14 01:07:04,771 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-07-14 01:07:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 581. [2021-07-14 01:07:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.9396551724137931) internal successors, (1125), 580 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1125 transitions. [2021-07-14 01:07:04,778 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1125 transitions. Word has length 48 [2021-07-14 01:07:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:04,778 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1125 transitions. [2021-07-14 01:07:04,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1125 transitions. [2021-07-14 01:07:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:04,779 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:04,779 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:04,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-14 01:07:04,780 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:04,780 INFO L82 PathProgramCache]: Analyzing trace with hash -851302822, now seen corresponding path program 46 times [2021-07-14 01:07:04,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:04,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043496807] [2021-07-14 01:07:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:04,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:04,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:04,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:04,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:04,831 INFO L142 QuantifierPusher]: treesize reduction 21, result has 50.0 percent of original size [2021-07-14 01:07:04,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-14 01:07:04,836 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-07-14 01:07:04,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-14 01:07:04,849 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-07-14 01:07:04,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 01:07:04,863 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-07-14 01:07:04,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-14 01:07:04,885 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-07-14 01:07:04,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-14 01:07:04,905 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-07-14 01:07:04,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-14 01:07:04,926 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-07-14 01:07:04,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:04,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:04,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:04,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:04,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043496807] [2021-07-14 01:07:04,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043496807] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:04,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:04,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:07:04,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844022933] [2021-07-14 01:07:04,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:07:04,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:07:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:04,936 INFO L87 Difference]: Start difference. First operand 581 states and 1125 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:05,144 INFO L93 Difference]: Finished difference Result 1099 states and 2181 transitions. [2021-07-14 01:07:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:07:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:05,145 INFO L225 Difference]: With dead ends: 1099 [2021-07-14 01:07:05,146 INFO L226 Difference]: Without dead ends: 974 [2021-07-14 01:07:05,146 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 210.7ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:07:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-07-14 01:07:05,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 654. [2021-07-14 01:07:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.9509954058192955) internal successors, (1274), 653 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1274 transitions. [2021-07-14 01:07:05,153 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1274 transitions. Word has length 48 [2021-07-14 01:07:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:05,154 INFO L482 AbstractCegarLoop]: Abstraction has 654 states and 1274 transitions. [2021-07-14 01:07:05,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1274 transitions. [2021-07-14 01:07:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:05,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:05,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:05,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-14 01:07:05,155 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash 379174100, now seen corresponding path program 47 times [2021-07-14 01:07:05,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:05,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665992447] [2021-07-14 01:07:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:05,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:05,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:05,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:05,188 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-14 01:07:05,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:05,196 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-07-14 01:07:05,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:05,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:05,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:05,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665992447] [2021-07-14 01:07:05,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665992447] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:05,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:05,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:07:05,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328527635] [2021-07-14 01:07:05,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:07:05,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:07:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:05,206 INFO L87 Difference]: Start difference. First operand 654 states and 1274 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:05,347 INFO L93 Difference]: Finished difference Result 1026 states and 1994 transitions. [2021-07-14 01:07:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:07:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:05,349 INFO L225 Difference]: With dead ends: 1026 [2021-07-14 01:07:05,349 INFO L226 Difference]: Without dead ends: 731 [2021-07-14 01:07:05,349 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:07:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-07-14 01:07:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 569. [2021-07-14 01:07:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.926056338028169) internal successors, (1094), 568 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1094 transitions. [2021-07-14 01:07:05,355 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1094 transitions. Word has length 48 [2021-07-14 01:07:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:05,355 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1094 transitions. [2021-07-14 01:07:05,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1094 transitions. [2021-07-14 01:07:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:05,356 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:05,356 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:05,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-14 01:07:05,356 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:05,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1995938908, now seen corresponding path program 48 times [2021-07-14 01:07:05,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:05,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119213349] [2021-07-14 01:07:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:05,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-14 01:07:05,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:05,381 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-14 01:07:05,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-14 01:07:05,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-14 01:07:05,388 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-14 01:07:05,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:07:05,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:05,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:05,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:05,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:05,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:05,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119213349] [2021-07-14 01:07:05,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119213349] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:05,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:05,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:07:05,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519498984] [2021-07-14 01:07:05,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:07:05,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:07:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:05,444 INFO L87 Difference]: Start difference. First operand 569 states and 1094 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:05,574 INFO L93 Difference]: Finished difference Result 858 states and 1677 transitions. [2021-07-14 01:07:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:07:05,574 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:05,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:05,575 INFO L225 Difference]: With dead ends: 858 [2021-07-14 01:07:05,575 INFO L226 Difference]: Without dead ends: 442 [2021-07-14 01:07:05,575 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:07:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-07-14 01:07:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-07-14 01:07:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.9206349206349207) internal successors, (847), 441 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 847 transitions. [2021-07-14 01:07:05,579 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 847 transitions. Word has length 48 [2021-07-14 01:07:05,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:05,579 INFO L482 AbstractCegarLoop]: Abstraction has 442 states and 847 transitions. [2021-07-14 01:07:05,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 847 transitions. [2021-07-14 01:07:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:05,580 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:05,580 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:05,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-14 01:07:05,580 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1158444418, now seen corresponding path program 49 times [2021-07-14 01:07:05,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:05,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11957095] [2021-07-14 01:07:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:05,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,600 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.9 percent of original size [2021-07-14 01:07:05,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-14 01:07:05,615 INFO L142 QuantifierPusher]: treesize reduction 12, result has 20.0 percent of original size [2021-07-14 01:07:05,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:05,618 INFO L142 QuantifierPusher]: treesize reduction 19, result has 36.7 percent of original size [2021-07-14 01:07:05,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-14 01:07:05,627 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-14 01:07:05,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,632 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-14 01:07:05,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,640 INFO L142 QuantifierPusher]: treesize reduction 76, result has 24.0 percent of original size [2021-07-14 01:07:05,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-14 01:07:05,653 INFO L142 QuantifierPusher]: treesize reduction 24, result has 35.1 percent of original size [2021-07-14 01:07:05,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 01:07:05,662 INFO L142 QuantifierPusher]: treesize reduction 35, result has 30.0 percent of original size [2021-07-14 01:07:05,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:05,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:05,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:05,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11957095] [2021-07-14 01:07:05,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11957095] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:05,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:05,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:07:05,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392402028] [2021-07-14 01:07:05,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:07:05,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:05,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:07:05,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:07:05,673 INFO L87 Difference]: Start difference. First operand 442 states and 847 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:05,866 INFO L93 Difference]: Finished difference Result 504 states and 972 transitions. [2021-07-14 01:07:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:07:05,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:05,867 INFO L225 Difference]: With dead ends: 504 [2021-07-14 01:07:05,867 INFO L226 Difference]: Without dead ends: 181 [2021-07-14 01:07:05,867 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 173.1ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-07-14 01:07:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-07-14 01:07:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-07-14 01:07:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.8166666666666667) internal successors, (327), 180 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 327 transitions. [2021-07-14 01:07:05,869 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 327 transitions. Word has length 48 [2021-07-14 01:07:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:05,869 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 327 transitions. [2021-07-14 01:07:05,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 327 transitions. [2021-07-14 01:07:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-14 01:07:05,869 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:07:05,869 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:07:05,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-14 01:07:05,870 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:07:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:07:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash -854759058, now seen corresponding path program 50 times [2021-07-14 01:07:05,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:07:05,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828998741] [2021-07-14 01:07:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:07:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:07:05,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:07:05,902 INFO L142 QuantifierPusher]: treesize reduction 33, result has 17.5 percent of original size [2021-07-14 01:07:05,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:07:05,907 INFO L142 QuantifierPusher]: treesize reduction 33, result has 23.3 percent of original size [2021-07-14 01:07:05,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:07:05,913 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-07-14 01:07:05,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 01:07:05,923 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-07-14 01:07:05,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-14 01:07:05,927 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-07-14 01:07:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-14 01:07:05,937 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-07-14 01:07:05,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-14 01:07:05,949 INFO L142 QuantifierPusher]: treesize reduction 17, result has 34.6 percent of original size [2021-07-14 01:07:05,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:05,956 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-07-14 01:07:05,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:07:05,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:07:05,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:07:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:07:05,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:07:05,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828998741] [2021-07-14 01:07:05,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828998741] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:07:05,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:07:05,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:07:05,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998003842] [2021-07-14 01:07:05,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:07:05,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:07:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:07:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:05,958 INFO L87 Difference]: Start difference. First operand 181 states and 327 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:07:06,004 INFO L93 Difference]: Finished difference Result 157 states and 283 transitions. [2021-07-14 01:07:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:07:06,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-14 01:07:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:07:06,004 INFO L225 Difference]: With dead ends: 157 [2021-07-14 01:07:06,004 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 01:07:06,004 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:07:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 01:07:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 01:07:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 01:07:06,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-14 01:07:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:07:06,005 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 01:07:06,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:07:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 01:07:06,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 01:07:06,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-14 01:07:06,007 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 01:07:06,008 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:07:06 BasicIcfg [2021-07-14 01:07:06,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 01:07:06,008 INFO L168 Benchmark]: Toolchain (without parser) took 18560.75 ms. Allocated memory was 208.7 MB in the beginning and 609.2 MB in the end (delta: 400.6 MB). Free memory was 189.0 MB in the beginning and 371.0 MB in the end (delta: -182.0 MB). Peak memory consumption was 219.7 MB. Max. memory is 8.0 GB. [2021-07-14 01:07:06,009 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.59 ms. Allocated memory is still 208.7 MB. Free memory is still 190.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:07:06,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.41 ms. Allocated memory is still 208.7 MB. Free memory was 188.9 MB in the beginning and 187.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 01:07:06,009 INFO L168 Benchmark]: Boogie Preprocessor took 10.56 ms. Allocated memory is still 208.7 MB. Free memory was 187.4 MB in the beginning and 186.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:07:06,009 INFO L168 Benchmark]: RCFGBuilder took 390.58 ms. Allocated memory is still 208.7 MB. Free memory was 186.3 MB in the beginning and 172.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-14 01:07:06,009 INFO L168 Benchmark]: TraceAbstraction took 18113.33 ms. Allocated memory was 208.7 MB in the beginning and 609.2 MB in the end (delta: 400.6 MB). Free memory was 171.9 MB in the beginning and 371.0 MB in the end (delta: -199.1 MB). Peak memory consumption was 202.9 MB. Max. memory is 8.0 GB. [2021-07-14 01:07:06,010 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 0.59 ms. Allocated memory is still 208.7 MB. Free memory is still 190.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.41 ms. Allocated memory is still 208.7 MB. Free memory was 188.9 MB in the beginning and 187.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.56 ms. Allocated memory is still 208.7 MB. Free memory was 187.4 MB in the beginning and 186.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 390.58 ms. Allocated memory is still 208.7 MB. Free memory was 186.3 MB in the beginning and 172.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18113.33 ms. Allocated memory was 208.7 MB in the beginning and 609.2 MB in the end (delta: 400.6 MB). Free memory was 171.9 MB in the beginning and 371.0 MB in the end (delta: -199.1 MB). Peak memory consumption was 202.9 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: 7333, positive: 6624, positive conditional: 6624, positive unconditional: 0, negative: 709, negative conditional: 709, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7333, positive: 6624, positive conditional: 0, positive unconditional: 6624, negative: 709, negative conditional: 0, negative unconditional: 709, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 740, positive: 670, positive conditional: 0, positive unconditional: 670, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 740, positive: 654, positive conditional: 0, positive unconditional: 654, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 86, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7333, positive: 5954, positive conditional: 0, positive unconditional: 5954, negative: 639, negative conditional: 0, negative unconditional: 639, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 740, Positive cache size: 670, Positive conditional cache size: 0, Positive unconditional cache size: 670, Negative cache size: 70, Negative conditional cache size: 0, Negative unconditional cache size: 70, Independence queries for same thread: 0 - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18034.8ms, OverallIterations: 50, TraceHistogramMax: 1, EmptinessCheckTime: 225.4ms, AutomataDifference: 9583.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 400.9ms, PartialOrderReductionTime: 386.7ms, HoareTripleCheckerStatistics: 4418 SDtfs, 6823 SDslu, 15511 SDs, 0 SdLazy, 10531 SolverSat, 1626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4698.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 97 SyntacticMatches, 43 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 5288.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4040occurred in iteration=14, InterpolantAutomatonStates: 506, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2660.1ms AutomataMinimizationTime, 50 MinimizatonAttempts, 25747 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.5ms SsaConstructionTime, 302.2ms SatisfiabilityAnalysisTime, 4501.0ms InterpolantComputationTime, 2400 NumberOfCodeBlocks, 2400 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 2350 ConstructedInterpolants, 0 QuantifiedInterpolants, 15488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 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...