/usr/bin/java -Xmx16000000000 -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/node-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:02:11,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:02:11,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:02:11,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 22:02:11,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 22:02:11,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 22:02:11,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 22:02:11,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 22:02:11,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 22:02:11,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 22:02:11,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 22:02:11,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 22:02:11,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 22:02:11,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 22:02:11,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 22:02:11,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 22:02:11,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 22:02:11,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 22:02:11,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 22:02:11,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 22:02:11,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 22:02:11,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 22:02:11,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 22:02:11,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 22:02:11,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 22:02:11,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 22:02:11,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 22:02:11,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 22:02:11,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 22:02:11,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 22:02:11,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 22:02:11,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 22:02:11,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 22:02:11,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 22:02:11,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 22:02:11,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 22:02:11,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 22:02:11,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 22:02:11,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 22:02:11,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 22:02:11,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 22:02:11,097 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 [2021-06-05 22:02:11,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:02:11,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:02:11,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:02:11,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:02:11,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:02:11,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:02:11,122 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:02:11,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:02:11,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:02:11,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:02:11,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:02:11,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:02:11,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:02:11,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:02:11,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:02:11,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:02:11,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:02:11,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:02:11,350 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:02:11,352 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:02:11,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-trans.wvr.bpl [2021-06-05 22:02:11,352 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-trans.wvr.bpl' [2021-06-05 22:02:11,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:02:11,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:02:11,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:02:11,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:02:11,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:02:11,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:02:11,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:02:11,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:02:11,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:02:11,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... [2021-06-05 22:02:11,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:02:11,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:02:11,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:02:11,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:02:11,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:02:11,469 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:02:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:02:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:02:11,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:02:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:02:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:02:11,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:02:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:02:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:02:11,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 22:02:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 22:02:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 22:02:11,472 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:02:11,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:02:11,672 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:02:11,673 INFO L202 PluginConnector]: Adding new model node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:02:11 BoogieIcfgContainer [2021-06-05 22:02:11,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:02:11,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:02:11,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:02:11,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:02:11,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:02:11" (1/2) ... [2021-06-05 22:02:11,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c24e8f6 and model type node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:02:11, skipping insertion in model container [2021-06-05 22:02:11,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:02:11" (2/2) ... [2021-06-05 22:02:11,681 INFO L111 eAbstractionObserver]: Analyzing ICFG node-trans.wvr.bpl [2021-06-05 22:02:11,684 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:02:11,684 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:02:11,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:02:11,685 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:02:11,728 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 22:02:11,747 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 22:02:11,758 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:02:11,758 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:02:11,758 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:02:11,758 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:02:11,758 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:02:11,758 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:02:11,758 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:02:11,758 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:02:11,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-06-05 22:02:11,772 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:11,778 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:11,778 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:11,778 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:11,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1339387224, now seen corresponding path program 1 times [2021-06-05 22:02:11,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:11,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635038609] [2021-06-05 22:02:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:12,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:12,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635038609] [2021-06-05 22:02:12,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635038609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:12,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:12,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:12,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063704226] [2021-06-05 22:02:12,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:12,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:12,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:12,138 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 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) [2021-06-05 22:02:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:12,278 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-06-05 22:02:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:12,279 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 [2021-06-05 22:02:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:12,285 INFO L225 Difference]: With dead ends: 93 [2021-06-05 22:02:12,285 INFO L226 Difference]: Without dead ends: 72 [2021-06-05 22:02:12,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 197.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-06-05 22:02:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-06-05 22:02:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.0) internal successors, (108), 54 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 108 transitions. [2021-06-05 22:02:12,308 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 108 transitions. Word has length 14 [2021-06-05 22:02:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:12,308 INFO L482 AbstractCegarLoop]: Abstraction has 55 states and 108 transitions. [2021-06-05 22:02:12,309 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) [2021-06-05 22:02:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 108 transitions. [2021-06-05 22:02:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:12,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:12,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:12,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:02:12,310 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:12,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1006513718, now seen corresponding path program 2 times [2021-06-05 22:02:12,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:12,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339321374] [2021-06-05 22:02:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:12,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:12,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339321374] [2021-06-05 22:02:12,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339321374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:12,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:12,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:12,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328826784] [2021-06-05 22:02:12,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:12,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:12,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:12,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:12,468 INFO L87 Difference]: Start difference. First operand 55 states and 108 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) [2021-06-05 22:02:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:12,544 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2021-06-05 22:02:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:12,544 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 [2021-06-05 22:02:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:12,546 INFO L225 Difference]: With dead ends: 91 [2021-06-05 22:02:12,546 INFO L226 Difference]: Without dead ends: 70 [2021-06-05 22:02:12,547 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-06-05 22:02:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2021-06-05 22:02:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.0) internal successors, (104), 52 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 104 transitions. [2021-06-05 22:02:12,562 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 104 transitions. Word has length 14 [2021-06-05 22:02:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:12,562 INFO L482 AbstractCegarLoop]: Abstraction has 53 states and 104 transitions. [2021-06-05 22:02:12,562 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) [2021-06-05 22:02:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 104 transitions. [2021-06-05 22:02:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:12,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:12,562 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:12,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:02:12,563 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1302626698, now seen corresponding path program 3 times [2021-06-05 22:02:12,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:12,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550373890] [2021-06-05 22:02:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:12,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:12,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550373890] [2021-06-05 22:02:12,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550373890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:12,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:12,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:12,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280648161] [2021-06-05 22:02:12,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:12,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:12,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:12,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:12,761 INFO L87 Difference]: Start difference. First operand 53 states and 104 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) [2021-06-05 22:02:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:12,893 INFO L93 Difference]: Finished difference Result 85 states and 154 transitions. [2021-06-05 22:02:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:12,894 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 [2021-06-05 22:02:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:12,894 INFO L225 Difference]: With dead ends: 85 [2021-06-05 22:02:12,895 INFO L226 Difference]: Without dead ends: 64 [2021-06-05 22:02:12,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 217.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-06-05 22:02:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-06-05 22:02:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.9130434782608696) internal successors, (88), 46 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 88 transitions. [2021-06-05 22:02:12,898 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 88 transitions. Word has length 14 [2021-06-05 22:02:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:12,898 INFO L482 AbstractCegarLoop]: Abstraction has 47 states and 88 transitions. [2021-06-05 22:02:12,898 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) [2021-06-05 22:02:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 88 transitions. [2021-06-05 22:02:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:12,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:12,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:12,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:02:12,899 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:12,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1148523496, now seen corresponding path program 4 times [2021-06-05 22:02:12,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:12,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080691401] [2021-06-05 22:02:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:13,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:13,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080691401] [2021-06-05 22:02:13,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080691401] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:13,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:13,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:13,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310357314] [2021-06-05 22:02:13,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:13,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:13,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:13,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:13,048 INFO L87 Difference]: Start difference. First operand 47 states and 88 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) [2021-06-05 22:02:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:13,140 INFO L93 Difference]: Finished difference Result 73 states and 135 transitions. [2021-06-05 22:02:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:13,141 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 [2021-06-05 22:02:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:13,141 INFO L225 Difference]: With dead ends: 73 [2021-06-05 22:02:13,142 INFO L226 Difference]: Without dead ends: 40 [2021-06-05 22:02:13,142 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-06-05 22:02:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-06-05 22:02:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 72 transitions. [2021-06-05 22:02:13,146 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 72 transitions. Word has length 14 [2021-06-05 22:02:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:13,147 INFO L482 AbstractCegarLoop]: Abstraction has 40 states and 72 transitions. [2021-06-05 22:02:13,147 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) [2021-06-05 22:02:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 72 transitions. [2021-06-05 22:02:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:13,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:13,147 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:13,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:02:13,148 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash -625433448, now seen corresponding path program 5 times [2021-06-05 22:02:13,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:13,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450762546] [2021-06-05 22:02:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:13,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:13,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450762546] [2021-06-05 22:02:13,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450762546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:13,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:13,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:13,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502341645] [2021-06-05 22:02:13,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:13,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:13,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:13,371 INFO L87 Difference]: Start difference. First operand 40 states and 72 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) [2021-06-05 22:02:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:13,522 INFO L93 Difference]: Finished difference Result 55 states and 96 transitions. [2021-06-05 22:02:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:13,523 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 [2021-06-05 22:02:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:13,524 INFO L225 Difference]: With dead ends: 55 [2021-06-05 22:02:13,524 INFO L226 Difference]: Without dead ends: 36 [2021-06-05 22:02:13,524 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-06-05 22:02:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-06-05 22:02:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2021-06-05 22:02:13,531 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 14 [2021-06-05 22:02:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:13,531 INFO L482 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2021-06-05 22:02:13,531 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) [2021-06-05 22:02:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2021-06-05 22:02:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:02:13,532 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:02:13,532 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:02:13,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:02:13,532 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:02:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:02:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2092192118, now seen corresponding path program 6 times [2021-06-05 22:02:13,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:02:13,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168433210] [2021-06-05 22:02:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:02:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:02:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:02:13,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:02:13,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168433210] [2021-06-05 22:02:13,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168433210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:02:13,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:02:13,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:02:13,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282002937] [2021-06-05 22:02:13,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:02:13,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:02:13,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:02:13,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:02:13,657 INFO L87 Difference]: Start difference. First operand 36 states and 62 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) [2021-06-05 22:02:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:02:13,717 INFO L93 Difference]: Finished difference Result 34 states and 60 transitions. [2021-06-05 22:02:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:02:13,717 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 [2021-06-05 22:02:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:02:13,717 INFO L225 Difference]: With dead ends: 34 [2021-06-05 22:02:13,717 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 22:02:13,718 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:02:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 22:02:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 22:02:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:02:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 22:02:13,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-06-05 22:02:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:02:13,718 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 22:02:13,718 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) [2021-06-05 22:02:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 22:02:13,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:02:13,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:02:13,720 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:02:13,721 INFO L202 PluginConnector]: Adding new model node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:02:13 BasicIcfg [2021-06-05 22:02:13,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:02:13,722 INFO L168 Benchmark]: Toolchain (without parser) took 2334.65 ms. Allocated memory is still 354.4 MB. Free memory was 334.2 MB in the beginning and 269.1 MB in the end (delta: 65.1 MB). Peak memory consumption was 64.5 MB. Max. memory is 16.0 GB. [2021-06-05 22:02:13,722 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory is still 335.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:02:13,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.56 ms. Allocated memory is still 354.4 MB. Free memory was 334.1 MB in the beginning and 332.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:02:13,723 INFO L168 Benchmark]: Boogie Preprocessor took 9.56 ms. Allocated memory is still 354.4 MB. Free memory was 332.6 MB in the beginning and 331.7 MB in the end (delta: 891.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:02:13,723 INFO L168 Benchmark]: RCFGBuilder took 259.97 ms. Allocated memory is still 354.4 MB. Free memory was 331.6 MB in the beginning and 316.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 22:02:13,723 INFO L168 Benchmark]: TraceAbstraction took 2044.26 ms. Allocated memory is still 354.4 MB. Free memory was 316.0 MB in the beginning and 269.1 MB in the end (delta: 46.9 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.0 GB. [2021-06-05 22:02:13,724 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 0.10 ms. Allocated memory is still 354.4 MB. Free memory is still 335.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.56 ms. Allocated memory is still 354.4 MB. Free memory was 334.1 MB in the beginning and 332.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.56 ms. Allocated memory is still 354.4 MB. Free memory was 332.6 MB in the beginning and 331.7 MB in the end (delta: 891.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 259.97 ms. Allocated memory is still 354.4 MB. Free memory was 331.6 MB in the beginning and 316.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2044.26 ms. Allocated memory is still 354.4 MB. Free memory was 316.0 MB in the beginning and 269.1 MB in the end (delta: 46.9 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: 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: 1962.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 7.9ms, AutomataDifference: 690.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 125 SDtfs, 157 SDslu, 191 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1022.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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: 42.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.5ms SsaConstructionTime, 117.3ms SatisfiabilityAnalysisTime, 984.9ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 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...