/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:42:45,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:42:45,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:42:45,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 19:42:45,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 19:42:45,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 19:42:45,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 19:42:45,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 19:42:45,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 19:42:45,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 19:42:45,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 19:42:45,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 19:42:45,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 19:42:45,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 19:42:45,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 19:42:45,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 19:42:45,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 19:42:45,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 19:42:45,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 19:42:45,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 19:42:45,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 19:42:45,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 19:42:45,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 19:42:45,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 19:42:45,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-13 19:42:45,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-13 19:42:45,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-13 19:42:45,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-13 19:42:45,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-13 19:42:45,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-13 19:42:45,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-13 19:42:45,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-13 19:42:45,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-13 19:42:45,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-13 19:42:45,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-13 19:42:45,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-13 19:42:45,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-13 19:42:45,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-13 19:42:45,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 19:42:45,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 19:42:45,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 19:42:45,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 19:42:45,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:42:45,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:42:45,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:42:45,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:42:45,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:42:45,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:42:45,631 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:42:45,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:42:45,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:42:45,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:42:45,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:42:45,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:42:45,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:42:45,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:42:45,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:42:45,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:42:45,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:42:45,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:42:45,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:42:45,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:42:45,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:42:45,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:42:45,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:42:45,919 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:42:45,921 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:42:45,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl [2021-07-13 19:42:45,921 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-trans.wvr.bpl' [2021-07-13 19:42:46,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:42:46,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:42:46,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:42:46,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:42:46,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:42:46,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:42:46,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:42:46,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:42:46,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:42:46,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/1) ... [2021-07-13 19:42:46,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:42:46,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:42:46,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:42:46,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:42:46,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (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 [2021-07-13 19:42:46,222 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:42:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:42:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:42:46,223 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:42:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:42:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:42:46,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:42:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:42:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:42:46,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:42:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:42:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:42:46,226 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:42:46,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:42:46,374 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:42:46,375 INFO L202 PluginConnector]: Adding new model time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:42:46 BoogieIcfgContainer [2021-07-13 19:42:46,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:42:46,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:42:46,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:42:46,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:42:46,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:46" (1/2) ... [2021-07-13 19:42:46,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d531671 and model type time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:42:46, skipping insertion in model container [2021-07-13 19:42:46,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:42:46" (2/2) ... [2021-07-13 19:42:46,381 INFO L111 eAbstractionObserver]: Analyzing ICFG time-trans.wvr.bpl [2021-07-13 19:42:46,386 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:42:46,386 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:42:46,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:42:46,387 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:42:46,416 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 19:42:46,435 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 19:42:46,450 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:42:46,450 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:42:46,450 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:42:46,451 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:42:46,451 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:42:46,451 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:42:46,451 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:42:46,451 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:42:46,476 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-07-13 19:42:46,522 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:46,530 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:46,531 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:46,531 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1136787291, now seen corresponding path program 1 times [2021-07-13 19:42:46,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:46,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833004583] [2021-07-13 19:42:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:47,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:47,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833004583] [2021-07-13 19:42:47,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833004583] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:47,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:47,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:47,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600057262] [2021-07-13 19:42:47,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:47,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:47,027 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 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 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:47,139 INFO L93 Difference]: Finished difference Result 98 states and 183 transitions. [2021-07-13 19:42:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:47,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:47,147 INFO L225 Difference]: With dead ends: 98 [2021-07-13 19:42:47,148 INFO L226 Difference]: Without dead ends: 72 [2021-07-13 19:42:47,149 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-07-13 19:42:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-07-13 19:42:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 105 transitions. [2021-07-13 19:42:47,179 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 105 transitions. Word has length 14 [2021-07-13 19:42:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:47,179 INFO L482 AbstractCegarLoop]: Abstraction has 55 states and 105 transitions. [2021-07-13 19:42:47,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 105 transitions. [2021-07-13 19:42:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:47,180 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:47,180 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:47,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:42:47,181 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:47,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1183349877, now seen corresponding path program 2 times [2021-07-13 19:42:47,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:47,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041793757] [2021-07-13 19:42:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:47,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:47,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041793757] [2021-07-13 19:42:47,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041793757] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:47,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:47,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082570533] [2021-07-13 19:42:47,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:47,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:47,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:47,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:47,317 INFO L87 Difference]: Start difference. First operand 55 states and 105 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:47,443 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2021-07-13 19:42:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:47,444 INFO L225 Difference]: With dead ends: 93 [2021-07-13 19:42:47,444 INFO L226 Difference]: Without dead ends: 65 [2021-07-13 19:42:47,445 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-07-13 19:42:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-07-13 19:42:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2021-07-13 19:42:47,452 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 14 [2021-07-13 19:42:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:47,452 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2021-07-13 19:42:47,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2021-07-13 19:42:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:47,453 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:47,453 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:47,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:42:47,454 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1975784205, now seen corresponding path program 3 times [2021-07-13 19:42:47,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:47,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926756958] [2021-07-13 19:42:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:47,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:47,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926756958] [2021-07-13 19:42:47,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926756958] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:47,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:47,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:47,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708324256] [2021-07-13 19:42:47,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:47,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:47,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:47,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:47,589 INFO L87 Difference]: Start difference. First operand 48 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:47,678 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2021-07-13 19:42:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:47,680 INFO L225 Difference]: With dead ends: 80 [2021-07-13 19:42:47,680 INFO L226 Difference]: Without dead ends: 54 [2021-07-13 19:42:47,681 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-07-13 19:42:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-07-13 19:42:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2021-07-13 19:42:47,685 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 14 [2021-07-13 19:42:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:47,685 INFO L482 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2021-07-13 19:42:47,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2021-07-13 19:42:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:47,686 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:47,686 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:47,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:42:47,686 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:47,687 INFO L82 PathProgramCache]: Analyzing trace with hash -631965881, now seen corresponding path program 4 times [2021-07-13 19:42:47,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:47,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079846142] [2021-07-13 19:42:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:47,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:47,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079846142] [2021-07-13 19:42:47,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079846142] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:47,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:47,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:47,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357493642] [2021-07-13 19:42:47,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:47,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:47,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:47,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:47,791 INFO L87 Difference]: Start difference. First operand 37 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:47,875 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2021-07-13 19:42:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:47,876 INFO L225 Difference]: With dead ends: 56 [2021-07-13 19:42:47,876 INFO L226 Difference]: Without dead ends: 33 [2021-07-13 19:42:47,877 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-07-13 19:42:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-07-13 19:42:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-07-13 19:42:47,885 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 14 [2021-07-13 19:42:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:47,885 INFO L482 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-07-13 19:42:47,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:47,885 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-07-13 19:42:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:47,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:47,886 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:47,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:42:47,887 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1854764167, now seen corresponding path program 5 times [2021-07-13 19:42:47,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:47,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744992467] [2021-07-13 19:42:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:48,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:48,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744992467] [2021-07-13 19:42:48,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744992467] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:48,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:48,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:48,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391087934] [2021-07-13 19:42:48,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:48,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:48,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:48,058 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:48,164 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2021-07-13 19:42:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:48,165 INFO L225 Difference]: With dead ends: 48 [2021-07-13 19:42:48,165 INFO L226 Difference]: Without dead ends: 27 [2021-07-13 19:42:48,166 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-07-13 19:42:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-07-13 19:42:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-07-13 19:42:48,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 14 [2021-07-13 19:42:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:48,168 INFO L482 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-07-13 19:42:48,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-07-13 19:42:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:48,169 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:48,169 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:48,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:42:48,169 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:48,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1563249337, now seen corresponding path program 6 times [2021-07-13 19:42:48,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:48,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397716042] [2021-07-13 19:42:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:48,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:48,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397716042] [2021-07-13 19:42:48,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397716042] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:48,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:48,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:42:48,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123908973] [2021-07-13 19:42:48,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:42:48,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:42:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:48,297 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:48,413 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2021-07-13 19:42:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:42:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-07-13 19:42:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:48,415 INFO L225 Difference]: With dead ends: 25 [2021-07-13 19:42:48,415 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:42:48,415 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:42:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:42:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:42:48,415 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) [2021-07-13 19:42:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:42:48,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-13 19:42:48,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:48,419 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:42:48,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:42:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:42:48,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:42:48,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:42:48,428 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:42:48,430 INFO L202 PluginConnector]: Adding new model time-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:42:48 BasicIcfg [2021-07-13 19:42:48,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:42:48,431 INFO L168 Benchmark]: Toolchain (without parser) took 2325.95 ms. Allocated memory was 201.3 MB in the beginning and 242.2 MB in the end (delta: 40.9 MB). Free memory was 182.5 MB in the beginning and 214.4 MB in the end (delta: -31.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:48,432 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 201.3 MB. Free memory is still 183.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:42:48,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 201.3 MB. Free memory was 182.5 MB in the beginning and 181.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:42:48,434 INFO L168 Benchmark]: Boogie Preprocessor took 12.04 ms. Allocated memory is still 201.3 MB. Free memory was 181.0 MB in the beginning and 180.2 MB in the end (delta: 861.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:48,440 INFO L168 Benchmark]: RCFGBuilder took 237.26 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 167.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:48,441 INFO L168 Benchmark]: TraceAbstraction took 2053.56 ms. Allocated memory was 201.3 MB in the beginning and 242.2 MB in the end (delta: 40.9 MB). Free memory was 167.4 MB in the beginning and 214.4 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:42:48,442 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 0.11 ms. Allocated memory is still 201.3 MB. Free memory is still 183.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 201.3 MB. Free memory was 182.5 MB in the beginning and 181.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.04 ms. Allocated memory is still 201.3 MB. Free memory was 181.0 MB in the beginning and 180.2 MB in the end (delta: 861.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 237.26 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 167.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2053.56 ms. Allocated memory was 201.3 MB in the beginning and 242.2 MB in the end (delta: 40.9 MB). Free memory was 167.4 MB in the beginning and 214.4 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1977.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.7ms, AutomataDifference: 681.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 149 SDslu, 177 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 894.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.8ms SsaConstructionTime, 109.4ms SatisfiabilityAnalysisTime, 881.0ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...