/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/ticket-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:05:49,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:05:49,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:05:49,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 23:05:49,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:05:49,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:05:49,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:05:49,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:05:49,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:05:49,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:05:49,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:05:49,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:05:49,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:05:49,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:05:49,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:05:49,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:05:49,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:05:49,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:05:49,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:05:49,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:05:49,072 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 [2021-07-09 23:05:49,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:05:49,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:05:49,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:05:49,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:05:49,094 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:05:49,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:05:49,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:05:49,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:05:49,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:05:49,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:05:49,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:05:49,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:05:49,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:05:49,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:05:49,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:05:49,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:05:49,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:05:49,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:05:49,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:05:49,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:05:49,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:05:49,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:05:49,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:05:49,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:05:49,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:05:49,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:05:49,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:05:49,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:05:49,441 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:05:49,442 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:05:49,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl [2021-07-09 23:05:49,443 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl' [2021-07-09 23:05:49,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:05:49,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:05:49,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:05:49,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:05:49,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:05:49,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:05:49,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:05:49,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:05:49,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:05:49,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... [2021-07-09 23:05:49,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:05:49,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:05:49,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:05:49,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:05:49,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:05:49,587 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:05:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:05:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:05:49,587 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:05:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:05:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:05:49,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:05:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:05:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:05:49,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:05:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:05:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:05:49,589 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 23:05:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 23:05:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 23:05:49,590 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:05:49,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:05:49,767 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:05:49,769 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:05:49 BoogieIcfgContainer [2021-07-09 23:05:49,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:05:49,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:05:49,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:05:49,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:05:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:49" (1/2) ... [2021-07-09 23:05:49,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c89c1b2 and model type ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:05:49, skipping insertion in model container [2021-07-09 23:05:49,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:05:49" (2/2) ... [2021-07-09 23:05:49,775 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.bpl [2021-07-09 23:05:49,780 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:05:49,780 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:05:49,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:05:49,781 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:05:49,830 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-09 23:05:49,848 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-09 23:05:49,862 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:05:49,863 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:05:49,863 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:05:49,863 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:05:49,863 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:05:49,863 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:05:49,863 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:05:49,863 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:05:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 2076 states, 1594 states have (on average 2.461731493099122) internal successors, (3924), 2075 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:50,467 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:50,468 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] [2021-07-09 23:05:50,468 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:50,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1235359963, now seen corresponding path program 1 times [2021-07-09 23:05:50,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:50,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629600331] [2021-07-09 23:05:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:50,700 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-07-09 23:05:50,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:05:50,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:50,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:50,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:50,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:50,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:50,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:50,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:50,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:05:50,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:50,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:50,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:50,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629600331] [2021-07-09 23:05:50,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629600331] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:50,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:50,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:05:50,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015048117] [2021-07-09 23:05:50,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:05:50,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:50,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:05:50,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:50,765 INFO L87 Difference]: Start difference. First operand has 2076 states, 1594 states have (on average 2.461731493099122) internal successors, (3924), 2075 states have internal predecessors, (3924), 0 states have call successors, (0), 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 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:50,876 INFO L93 Difference]: Finished difference Result 3184 states and 5975 transitions. [2021-07-09 23:05:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:05:50,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:50,900 INFO L225 Difference]: With dead ends: 3184 [2021-07-09 23:05:50,900 INFO L226 Difference]: Without dead ends: 953 [2021-07-09 23:05:50,901 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-07-09 23:05:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 932. [2021-07-09 23:05:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.4403866809881847) internal successors, (2272), 931 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2272 transitions. [2021-07-09 23:05:51,044 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2272 transitions. Word has length 32 [2021-07-09 23:05:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:51,045 INFO L482 AbstractCegarLoop]: Abstraction has 932 states and 2272 transitions. [2021-07-09 23:05:51,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2272 transitions. [2021-07-09 23:05:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:51,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:51,049 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] [2021-07-09 23:05:51,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:05:51,050 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1817419397, now seen corresponding path program 2 times [2021-07-09 23:05:51,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:51,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589071251] [2021-07-09 23:05:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:51,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:51,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:51,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:51,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:51,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:51,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589071251] [2021-07-09 23:05:51,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589071251] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:51,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:51,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:05:51,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369697213] [2021-07-09 23:05:51,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:05:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:51,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:05:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:05:51,165 INFO L87 Difference]: Start difference. First operand 932 states and 2272 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:51,351 INFO L93 Difference]: Finished difference Result 1667 states and 3936 transitions. [2021-07-09 23:05:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 23:05:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:51,361 INFO L225 Difference]: With dead ends: 1667 [2021-07-09 23:05:51,361 INFO L226 Difference]: Without dead ends: 1655 [2021-07-09 23:05:51,362 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-07-09 23:05:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1007. [2021-07-09 23:05:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 1006 states have (on average 2.4324055666003974) internal successors, (2447), 1006 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 2447 transitions. [2021-07-09 23:05:51,402 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 2447 transitions. Word has length 32 [2021-07-09 23:05:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:51,403 INFO L482 AbstractCegarLoop]: Abstraction has 1007 states and 2447 transitions. [2021-07-09 23:05:51,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 2447 transitions. [2021-07-09 23:05:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:51,411 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:51,412 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] [2021-07-09 23:05:51,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:05:51,412 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:51,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:51,417 INFO L82 PathProgramCache]: Analyzing trace with hash -227761689, now seen corresponding path program 3 times [2021-07-09 23:05:51,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:51,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706161847] [2021-07-09 23:05:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:51,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:51,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:51,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:51,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:51,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706161847] [2021-07-09 23:05:51,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706161847] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:51,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:51,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:51,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013752786] [2021-07-09 23:05:51,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:51,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:51,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:51,504 INFO L87 Difference]: Start difference. First operand 1007 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:51,640 INFO L93 Difference]: Finished difference Result 1760 states and 4111 transitions. [2021-07-09 23:05:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:05:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:51,649 INFO L225 Difference]: With dead ends: 1760 [2021-07-09 23:05:51,649 INFO L226 Difference]: Without dead ends: 1748 [2021-07-09 23:05:51,650 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-07-09 23:05:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 993. [2021-07-09 23:05:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.4294354838709675) internal successors, (2410), 992 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2410 transitions. [2021-07-09 23:05:51,690 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2410 transitions. Word has length 32 [2021-07-09 23:05:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:51,690 INFO L482 AbstractCegarLoop]: Abstraction has 993 states and 2410 transitions. [2021-07-09 23:05:51,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2410 transitions. [2021-07-09 23:05:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:51,695 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:51,695 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] [2021-07-09 23:05:51,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:05:51,696 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 424961605, now seen corresponding path program 4 times [2021-07-09 23:05:51,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:51,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790980608] [2021-07-09 23:05:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:51,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:51,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:51,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:51,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:51,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:51,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:51,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790980608] [2021-07-09 23:05:51,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790980608] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:51,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:51,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:51,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676057780] [2021-07-09 23:05:51,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:51,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:51,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:51,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:51,803 INFO L87 Difference]: Start difference. First operand 993 states and 2410 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:51,975 INFO L93 Difference]: Finished difference Result 1860 states and 4259 transitions. [2021-07-09 23:05:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:51,985 INFO L225 Difference]: With dead ends: 1860 [2021-07-09 23:05:51,985 INFO L226 Difference]: Without dead ends: 1798 [2021-07-09 23:05:51,985 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-07-09 23:05:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1025. [2021-07-09 23:05:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 2.3994140625) internal successors, (2457), 1024 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2457 transitions. [2021-07-09 23:05:52,039 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2457 transitions. Word has length 32 [2021-07-09 23:05:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:52,040 INFO L482 AbstractCegarLoop]: Abstraction has 1025 states and 2457 transitions. [2021-07-09 23:05:52,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2457 transitions. [2021-07-09 23:05:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:52,042 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:52,042 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] [2021-07-09 23:05:52,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:05:52,043 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 599654953, now seen corresponding path program 5 times [2021-07-09 23:05:52,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:52,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288061430] [2021-07-09 23:05:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:52,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:52,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:52,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:52,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:52,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288061430] [2021-07-09 23:05:52,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288061430] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:52,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:52,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:52,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264802445] [2021-07-09 23:05:52,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:52,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:52,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:52,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:52,121 INFO L87 Difference]: Start difference. First operand 1025 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:52,235 INFO L93 Difference]: Finished difference Result 1777 states and 4112 transitions. [2021-07-09 23:05:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:05:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:52,244 INFO L225 Difference]: With dead ends: 1777 [2021-07-09 23:05:52,244 INFO L226 Difference]: Without dead ends: 1753 [2021-07-09 23:05:52,245 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-07-09 23:05:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1179. [2021-07-09 23:05:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.3556876061120544) internal successors, (2775), 1178 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2775 transitions. [2021-07-09 23:05:52,282 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2775 transitions. Word has length 32 [2021-07-09 23:05:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:52,283 INFO L482 AbstractCegarLoop]: Abstraction has 1179 states and 2775 transitions. [2021-07-09 23:05:52,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2775 transitions. [2021-07-09 23:05:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:52,287 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:52,287 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] [2021-07-09 23:05:52,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:05:52,287 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2057702023, now seen corresponding path program 6 times [2021-07-09 23:05:52,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:52,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100942853] [2021-07-09 23:05:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:52,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:52,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:52,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:52,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:52,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100942853] [2021-07-09 23:05:52,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100942853] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:52,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:52,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:52,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634191899] [2021-07-09 23:05:52,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:52,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:52,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:52,342 INFO L87 Difference]: Start difference. First operand 1179 states and 2775 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:52,516 INFO L93 Difference]: Finished difference Result 2104 states and 4869 transitions. [2021-07-09 23:05:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:52,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:52,527 INFO L225 Difference]: With dead ends: 2104 [2021-07-09 23:05:52,527 INFO L226 Difference]: Without dead ends: 2066 [2021-07-09 23:05:52,527 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-07-09 23:05:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1279. [2021-07-09 23:05:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 2.375586854460094) internal successors, (3036), 1278 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 3036 transitions. [2021-07-09 23:05:52,567 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 3036 transitions. Word has length 32 [2021-07-09 23:05:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:52,567 INFO L482 AbstractCegarLoop]: Abstraction has 1279 states and 3036 transitions. [2021-07-09 23:05:52,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 3036 transitions. [2021-07-09 23:05:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:52,570 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:52,570 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] [2021-07-09 23:05:52,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:05:52,571 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:52,571 INFO L82 PathProgramCache]: Analyzing trace with hash 406901029, now seen corresponding path program 7 times [2021-07-09 23:05:52,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:52,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336578041] [2021-07-09 23:05:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:52,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:52,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:52,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:52,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:52,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336578041] [2021-07-09 23:05:52,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336578041] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:52,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:52,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:52,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125037375] [2021-07-09 23:05:52,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:52,636 INFO L87 Difference]: Start difference. First operand 1279 states and 3036 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:52,741 INFO L93 Difference]: Finished difference Result 1804 states and 4093 transitions. [2021-07-09 23:05:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:05:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:52,749 INFO L225 Difference]: With dead ends: 1804 [2021-07-09 23:05:52,750 INFO L226 Difference]: Without dead ends: 1792 [2021-07-09 23:05:52,750 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2021-07-09 23:05:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1193. [2021-07-09 23:05:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1192 states have (on average 2.3221476510067114) internal successors, (2768), 1192 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 2768 transitions. [2021-07-09 23:05:52,785 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 2768 transitions. Word has length 32 [2021-07-09 23:05:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:52,785 INFO L482 AbstractCegarLoop]: Abstraction has 1193 states and 2768 transitions. [2021-07-09 23:05:52,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 2768 transitions. [2021-07-09 23:05:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:52,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:52,788 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] [2021-07-09 23:05:52,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 23:05:52,789 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:52,789 INFO L82 PathProgramCache]: Analyzing trace with hash -854507993, now seen corresponding path program 8 times [2021-07-09 23:05:52,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:52,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945524083] [2021-07-09 23:05:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:52,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:52,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:52,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:52,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:52,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:52,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:52,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945524083] [2021-07-09 23:05:52,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945524083] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:52,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:52,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:52,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594903423] [2021-07-09 23:05:52,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:52,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:52,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:52,833 INFO L87 Difference]: Start difference. First operand 1193 states and 2768 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:52,966 INFO L93 Difference]: Finished difference Result 1358 states and 2835 transitions. [2021-07-09 23:05:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:52,971 INFO L225 Difference]: With dead ends: 1358 [2021-07-09 23:05:52,971 INFO L226 Difference]: Without dead ends: 1274 [2021-07-09 23:05:52,972 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-07-09 23:05:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 865. [2021-07-09 23:05:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.146990740740741) internal successors, (1855), 864 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1855 transitions. [2021-07-09 23:05:52,994 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1855 transitions. Word has length 32 [2021-07-09 23:05:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:52,994 INFO L482 AbstractCegarLoop]: Abstraction has 865 states and 1855 transitions. [2021-07-09 23:05:52,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1855 transitions. [2021-07-09 23:05:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:52,997 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:52,997 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] [2021-07-09 23:05:52,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 23:05:52,997 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1497414359, now seen corresponding path program 9 times [2021-07-09 23:05:52,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:52,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195127573] [2021-07-09 23:05:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:53,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:53,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:53,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:53,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195127573] [2021-07-09 23:05:53,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195127573] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:53,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:53,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:53,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111277447] [2021-07-09 23:05:53,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:53,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:53,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:53,055 INFO L87 Difference]: Start difference. First operand 865 states and 1855 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:53,188 INFO L93 Difference]: Finished difference Result 1367 states and 2875 transitions. [2021-07-09 23:05:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:05:53,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:53,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:53,194 INFO L225 Difference]: With dead ends: 1367 [2021-07-09 23:05:53,194 INFO L226 Difference]: Without dead ends: 1343 [2021-07-09 23:05:53,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-07-09 23:05:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 853. [2021-07-09 23:05:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.124413145539906) internal successors, (1810), 852 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1810 transitions. [2021-07-09 23:05:53,217 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1810 transitions. Word has length 32 [2021-07-09 23:05:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:53,217 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 1810 transitions. [2021-07-09 23:05:53,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1810 transitions. [2021-07-09 23:05:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:53,219 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:53,219 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] [2021-07-09 23:05:53,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 23:05:53,220 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:53,220 INFO L82 PathProgramCache]: Analyzing trace with hash -39367289, now seen corresponding path program 10 times [2021-07-09 23:05:53,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:53,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424500819] [2021-07-09 23:05:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:53,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:53,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:53,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:53,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424500819] [2021-07-09 23:05:53,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424500819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:53,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:53,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:53,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312434499] [2021-07-09 23:05:53,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:53,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:53,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:53,269 INFO L87 Difference]: Start difference. First operand 853 states and 1810 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:53,421 INFO L93 Difference]: Finished difference Result 1351 states and 2820 transitions. [2021-07-09 23:05:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:53,426 INFO L225 Difference]: With dead ends: 1351 [2021-07-09 23:05:53,427 INFO L226 Difference]: Without dead ends: 1291 [2021-07-09 23:05:53,427 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:53,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-07-09 23:05:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 869. [2021-07-09 23:05:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 2.119815668202765) internal successors, (1840), 868 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1840 transitions. [2021-07-09 23:05:53,449 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1840 transitions. Word has length 32 [2021-07-09 23:05:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:53,450 INFO L482 AbstractCegarLoop]: Abstraction has 869 states and 1840 transitions. [2021-07-09 23:05:53,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1840 transitions. [2021-07-09 23:05:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:53,452 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:53,452 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] [2021-07-09 23:05:53,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 23:05:53,452 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:53,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1273840253, now seen corresponding path program 11 times [2021-07-09 23:05:53,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:53,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705812664] [2021-07-09 23:05:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:53,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:53,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:53,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:53,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705812664] [2021-07-09 23:05:53,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705812664] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:53,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:53,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:05:53,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033906526] [2021-07-09 23:05:53,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:05:53,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:53,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:05:53,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:53,506 INFO L87 Difference]: Start difference. First operand 869 states and 1840 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:53,725 INFO L93 Difference]: Finished difference Result 1407 states and 2920 transitions. [2021-07-09 23:05:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:05:53,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:53,731 INFO L225 Difference]: With dead ends: 1407 [2021-07-09 23:05:53,731 INFO L226 Difference]: Without dead ends: 1345 [2021-07-09 23:05:53,731 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-09 23:05:53,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-07-09 23:05:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 883. [2021-07-09 23:05:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.1031746031746033) internal successors, (1855), 882 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1855 transitions. [2021-07-09 23:05:53,755 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1855 transitions. Word has length 32 [2021-07-09 23:05:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:53,755 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 1855 transitions. [2021-07-09 23:05:53,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1855 transitions. [2021-07-09 23:05:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:53,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:53,758 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] [2021-07-09 23:05:53,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 23:05:53,758 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:53,759 INFO L82 PathProgramCache]: Analyzing trace with hash 817560393, now seen corresponding path program 12 times [2021-07-09 23:05:53,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:53,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222802362] [2021-07-09 23:05:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:53,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:53,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:53,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222802362] [2021-07-09 23:05:53,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222802362] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:53,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:53,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:53,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312510050] [2021-07-09 23:05:53,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:53,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:53,798 INFO L87 Difference]: Start difference. First operand 883 states and 1855 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:53,922 INFO L93 Difference]: Finished difference Result 1357 states and 2801 transitions. [2021-07-09 23:05:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:05:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:53,928 INFO L225 Difference]: With dead ends: 1357 [2021-07-09 23:05:53,928 INFO L226 Difference]: Without dead ends: 1349 [2021-07-09 23:05:53,928 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:53,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-07-09 23:05:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 879. [2021-07-09 23:05:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.0990888382687927) internal successors, (1843), 878 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1843 transitions. [2021-07-09 23:05:53,952 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1843 transitions. Word has length 32 [2021-07-09 23:05:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:53,952 INFO L482 AbstractCegarLoop]: Abstraction has 879 states and 1843 transitions. [2021-07-09 23:05:53,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1843 transitions. [2021-07-09 23:05:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:53,955 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:53,955 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] [2021-07-09 23:05:53,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 23:05:53,955 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:53,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1470283687, now seen corresponding path program 13 times [2021-07-09 23:05:53,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:53,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349831643] [2021-07-09 23:05:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:53,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:53,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:53,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:53,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:54,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:54,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349831643] [2021-07-09 23:05:54,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349831643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:54,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:54,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:54,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210511510] [2021-07-09 23:05:54,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:54,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:54,003 INFO L87 Difference]: Start difference. First operand 879 states and 1843 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:54,149 INFO L93 Difference]: Finished difference Result 1367 states and 2802 transitions. [2021-07-09 23:05:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:54,154 INFO L225 Difference]: With dead ends: 1367 [2021-07-09 23:05:54,155 INFO L226 Difference]: Without dead ends: 1295 [2021-07-09 23:05:54,155 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-07-09 23:05:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 857. [2021-07-09 23:05:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.0794392523364484) internal successors, (1780), 856 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1780 transitions. [2021-07-09 23:05:54,175 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1780 transitions. Word has length 32 [2021-07-09 23:05:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:54,175 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 1780 transitions. [2021-07-09 23:05:54,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1780 transitions. [2021-07-09 23:05:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:54,177 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:54,177 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] [2021-07-09 23:05:54,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 23:05:54,177 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash -288315485, now seen corresponding path program 14 times [2021-07-09 23:05:54,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:54,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619536401] [2021-07-09 23:05:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:54,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:54,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:54,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:54,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619536401] [2021-07-09 23:05:54,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619536401] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:54,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:54,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:05:54,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120936906] [2021-07-09 23:05:54,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:05:54,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:54,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:05:54,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:54,230 INFO L87 Difference]: Start difference. First operand 857 states and 1780 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:54,418 INFO L93 Difference]: Finished difference Result 1378 states and 2789 transitions. [2021-07-09 23:05:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:05:54,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:54,434 INFO L225 Difference]: With dead ends: 1378 [2021-07-09 23:05:54,435 INFO L226 Difference]: Without dead ends: 1235 [2021-07-09 23:05:54,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-09 23:05:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-07-09 23:05:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 797. [2021-07-09 23:05:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.0753768844221105) internal successors, (1652), 796 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1652 transitions. [2021-07-09 23:05:54,454 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1652 transitions. Word has length 32 [2021-07-09 23:05:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:54,454 INFO L482 AbstractCegarLoop]: Abstraction has 797 states and 1652 transitions. [2021-07-09 23:05:54,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1652 transitions. [2021-07-09 23:05:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:54,456 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:54,456 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] [2021-07-09 23:05:54,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 23:05:54,456 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1686264217, now seen corresponding path program 15 times [2021-07-09 23:05:54,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:54,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391469697] [2021-07-09 23:05:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:54,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:54,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:54,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:54,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391469697] [2021-07-09 23:05:54,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391469697] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:54,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:54,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:54,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923200740] [2021-07-09 23:05:54,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:54,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:54,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:54,515 INFO L87 Difference]: Start difference. First operand 797 states and 1652 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:54,669 INFO L93 Difference]: Finished difference Result 1189 states and 2423 transitions. [2021-07-09 23:05:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:54,672 INFO L225 Difference]: With dead ends: 1189 [2021-07-09 23:05:54,672 INFO L226 Difference]: Without dead ends: 1169 [2021-07-09 23:05:54,673 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-07-09 23:05:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 815. [2021-07-09 23:05:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 2.0614250614250613) internal successors, (1678), 814 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1678 transitions. [2021-07-09 23:05:54,690 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1678 transitions. Word has length 32 [2021-07-09 23:05:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:54,690 INFO L482 AbstractCegarLoop]: Abstraction has 815 states and 1678 transitions. [2021-07-09 23:05:54,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1678 transitions. [2021-07-09 23:05:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:54,692 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:54,692 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] [2021-07-09 23:05:54,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 23:05:54,693 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:54,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1269936187, now seen corresponding path program 16 times [2021-07-09 23:05:54,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:54,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987345445] [2021-07-09 23:05:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:54,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:54,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:54,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:54,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987345445] [2021-07-09 23:05:54,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987345445] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:54,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:54,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:05:54,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539884230] [2021-07-09 23:05:54,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:05:54,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:05:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:54,746 INFO L87 Difference]: Start difference. First operand 815 states and 1678 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:54,935 INFO L93 Difference]: Finished difference Result 1230 states and 2487 transitions. [2021-07-09 23:05:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:05:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:54,938 INFO L225 Difference]: With dead ends: 1230 [2021-07-09 23:05:54,938 INFO L226 Difference]: Without dead ends: 1177 [2021-07-09 23:05:54,939 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-09 23:05:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-07-09 23:05:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 803. [2021-07-09 23:05:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.071072319201995) internal successors, (1661), 802 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1661 transitions. [2021-07-09 23:05:54,955 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1661 transitions. Word has length 32 [2021-07-09 23:05:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:54,955 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 1661 transitions. [2021-07-09 23:05:54,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1661 transitions. [2021-07-09 23:05:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:54,957 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:54,957 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] [2021-07-09 23:05:54,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 23:05:54,957 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash -679157873, now seen corresponding path program 17 times [2021-07-09 23:05:54,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:54,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71562124] [2021-07-09 23:05:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:54,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:54,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:54,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:54,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:54,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:54,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:54,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71562124] [2021-07-09 23:05:54,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71562124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:54,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:54,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:05:54,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9161270] [2021-07-09 23:05:54,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:05:54,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:54,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:05:54,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:05:54,989 INFO L87 Difference]: Start difference. First operand 803 states and 1661 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:55,072 INFO L93 Difference]: Finished difference Result 846 states and 1668 transitions. [2021-07-09 23:05:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:05:55,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:55,074 INFO L225 Difference]: With dead ends: 846 [2021-07-09 23:05:55,074 INFO L226 Difference]: Without dead ends: 798 [2021-07-09 23:05:55,074 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-07-09 23:05:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 471. [2021-07-09 23:05:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.9936170212765958) internal successors, (937), 470 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 937 transitions. [2021-07-09 23:05:55,084 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 937 transitions. Word has length 32 [2021-07-09 23:05:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:55,084 INFO L482 AbstractCegarLoop]: Abstraction has 471 states and 937 transitions. [2021-07-09 23:05:55,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 937 transitions. [2021-07-09 23:05:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:55,085 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:55,085 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] [2021-07-09 23:05:55,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 23:05:55,085 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1129651409, now seen corresponding path program 18 times [2021-07-09 23:05:55,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:55,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188216596] [2021-07-09 23:05:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:55,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:55,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:55,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:55,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:55,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188216596] [2021-07-09 23:05:55,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188216596] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:55,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:55,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:05:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367313773] [2021-07-09 23:05:55,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:05:55,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:05:55,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:05:55,123 INFO L87 Difference]: Start difference. First operand 471 states and 937 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:55,223 INFO L93 Difference]: Finished difference Result 214 states and 328 transitions. [2021-07-09 23:05:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:05:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:55,224 INFO L225 Difference]: With dead ends: 214 [2021-07-09 23:05:55,224 INFO L226 Difference]: Without dead ends: 112 [2021-07-09 23:05:55,224 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-07-09 23:05:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2021-07-09 23:05:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 77 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 120 transitions. [2021-07-09 23:05:55,232 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 120 transitions. Word has length 32 [2021-07-09 23:05:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:55,232 INFO L482 AbstractCegarLoop]: Abstraction has 78 states and 120 transitions. [2021-07-09 23:05:55,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 120 transitions. [2021-07-09 23:05:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 23:05:55,233 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:55,233 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] [2021-07-09 23:05:55,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 23:05:55,233 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:55,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:55,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1984228335, now seen corresponding path program 19 times [2021-07-09 23:05:55,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:55,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639976455] [2021-07-09 23:05:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:55,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:55,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:55,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:55,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:55,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:55,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639976455] [2021-07-09 23:05:55,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639976455] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:55,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:55,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:05:55,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714582636] [2021-07-09 23:05:55,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:05:55,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:55,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:05:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:05:55,299 INFO L87 Difference]: Start difference. First operand 78 states and 120 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:55,375 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2021-07-09 23:05:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:05:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-07-09 23:05:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:55,376 INFO L225 Difference]: With dead ends: 53 [2021-07-09 23:05:55,376 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:05:55,376 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:05:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:05:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:05:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:05:55,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-07-09 23:05:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:55,377 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:05:55,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:05:55,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:05:55,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 23:05:55,379 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:05:55,380 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:05:55 BasicIcfg [2021-07-09 23:05:55,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:05:55,384 INFO L168 Benchmark]: Toolchain (without parser) took 5915.08 ms. Allocated memory was 175.1 MB in the beginning and 304.1 MB in the end (delta: 129.0 MB). Free memory was 156.7 MB in the beginning and 256.5 MB in the end (delta: -99.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:55,384 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 175.1 MB. Free memory is still 157.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:05:55,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.04 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 155.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:55,385 INFO L168 Benchmark]: Boogie Preprocessor took 22.11 ms. Allocated memory is still 175.1 MB. Free memory was 155.0 MB in the beginning and 154.1 MB in the end (delta: 896.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:55,385 INFO L168 Benchmark]: RCFGBuilder took 248.28 ms. Allocated memory is still 175.1 MB. Free memory was 154.1 MB in the beginning and 140.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:55,385 INFO L168 Benchmark]: TraceAbstraction took 5610.22 ms. Allocated memory was 175.1 MB in the beginning and 304.1 MB in the end (delta: 129.0 MB). Free memory was 139.9 MB in the beginning and 256.5 MB in the end (delta: -116.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:55,386 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 0.18 ms. Allocated memory is still 175.1 MB. Free memory is still 157.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.04 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 155.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.11 ms. Allocated memory is still 175.1 MB. Free memory was 155.0 MB in the beginning and 154.1 MB in the end (delta: 896.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 248.28 ms. Allocated memory is still 175.1 MB. Free memory was 154.1 MB in the beginning and 140.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5610.22 ms. Allocated memory was 175.1 MB in the beginning and 304.1 MB in the end (delta: 129.0 MB). Free memory was 139.9 MB in the beginning and 256.5 MB in the end (delta: -116.6 MB). Peak memory consumption was 13.5 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: 6619, positive: 6076, positive conditional: 6076, positive unconditional: 0, negative: 543, negative conditional: 543, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6619, positive: 6076, positive conditional: 0, positive unconditional: 6076, negative: 543, negative conditional: 0, negative unconditional: 543, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 293, positive: 268, positive conditional: 0, positive unconditional: 268, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 293, positive: 248, positive conditional: 0, positive unconditional: 248, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 171, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6619, positive: 5808, positive conditional: 0, positive unconditional: 5808, negative: 518, negative conditional: 0, negative unconditional: 518, unknown: 293, unknown conditional: 0, unknown unconditional: 293] , Statistics on independence cache: Total cache size (in pairs): 293, Positive cache size: 268, Positive conditional cache size: 0, Positive unconditional cache size: 268, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Independence queries for same thread: 0 - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 68 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5517.1ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 84.8ms, AutomataDifference: 2882.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 563.2ms, PartialOrderReductionTime: 550.6ms, HoareTripleCheckerStatistics: 711 SDtfs, 1248 SDslu, 2372 SDs, 0 SdLazy, 2891 SolverSat, 582 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1559.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 790.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2076occurred in iteration=0, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 579.4ms AutomataMinimizationTime, 19 MinimizatonAttempts, 8375 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.9ms SsaConstructionTime, 157.9ms SatisfiabilityAnalysisTime, 991.1ms InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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...