/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 02:23:00,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 02:23:00,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 02:23:00,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-22 02:23:00,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-22 02:23:00,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-22 02:23:00,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-22 02:23:00,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-22 02:23:00,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-22 02:23:00,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-22 02:23:00,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-22 02:23:00,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-22 02:23:00,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 02:23:00,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 02:23:00,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 02:23:00,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 02:23:00,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 02:23:00,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 02:23:00,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 02:23:00,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 02:23:00,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 02:23:00,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 02:23:00,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 02:23:00,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 02:23:00,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-22 02:23:00,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-22 02:23:00,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-22 02:23:00,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-22 02:23:00,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-22 02:23:00,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-22 02:23:00,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-22 02:23:00,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-22 02:23:00,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-22 02:23:00,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-22 02:23:00,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-22 02:23:00,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-22 02:23:00,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-22 02:23:00,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-22 02:23:00,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 02:23:00,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 02:23:00,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 02:23:00,637 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-Separate.epf [2021-05-22 02:23:00,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 02:23:00,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 02:23:00,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 02:23:00,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 02:23:00,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 02:23:00,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 02:23:00,660 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 02:23:00,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 02:23:00,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 02:23:00,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 02:23:00,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 02:23:00,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 02:23:00,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 02:23:00,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 02:23:00,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 02:23:00,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 02:23:00,663 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 02:23:00,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 02:23:00,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 02:23:00,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 02:23:00,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 02:23:00,909 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 02:23:00,911 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 02:23:00,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-subst.wvr.bpl [2021-05-22 02:23:00,911 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-subst.wvr.bpl' [2021-05-22 02:23:00,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 02:23:00,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 02:23:00,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 02:23:00,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 02:23:00,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 02:23:00,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 02:23:00,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 02:23:00,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 02:23:00,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 02:23:00,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/1) ... [2021-05-22 02:23:00,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 02:23:00,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 02:23:00,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 02:23:00,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 02:23:00,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (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 [2021-05-22 02:23:01,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-22 02:23:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-22 02:23:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-22 02:23:01,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-22 02:23:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-22 02:23:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-22 02:23:01,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 02:23:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 02:23:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 02:23:01,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-22 02:23:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-22 02:23:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-22 02:23:01,027 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 02:23:01,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 02:23:01,135 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 02:23:01,136 INFO L202 PluginConnector]: Adding new model sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 02:23:01 BoogieIcfgContainer [2021-05-22 02:23:01,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 02:23:01,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 02:23:01,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 02:23:01,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 02:23:01,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:23:00" (1/2) ... [2021-05-22 02:23:01,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef41505 and model type sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 02:23:01, skipping insertion in model container [2021-05-22 02:23:01,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 02:23:01" (2/2) ... [2021-05-22 02:23:01,141 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-subst.wvr.bpl [2021-05-22 02:23:01,145 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 02:23:01,145 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 02:23:01,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 02:23:01,146 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 02:23:01,180 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-22 02:23:01,211 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 02:23:01,224 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:23:01,240 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:23:01,241 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:23:01,241 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:23:01,241 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:23:01,241 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:23:01,241 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:23:01,241 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 02:23:01,247 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-05-22 02:23:01,273 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) [2021-05-22 02:23:01,275 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) [2021-05-22 02:23:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:01,280 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:01,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:01,281 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:01,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1166046022, now seen corresponding path program 1 times [2021-05-22 02:23:01,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:01,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439722912] [2021-05-22 02:23:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:01,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:01,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439722912] [2021-05-22 02:23:01,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439722912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:01,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:01,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631407660] [2021-05-22 02:23:01,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:01,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:01,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:01,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:01,805 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) [2021-05-22 02:23:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:01,972 INFO L93 Difference]: Finished difference Result 98 states and 183 transitions. [2021-05-22 02:23:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:01,974 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 [2021-05-22 02:23:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:01,984 INFO L225 Difference]: With dead ends: 98 [2021-05-22 02:23:01,984 INFO L226 Difference]: Without dead ends: 72 [2021-05-22 02:23:01,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 311.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-22 02:23:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-05-22 02:23:02,010 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) [2021-05-22 02:23:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 105 transitions. [2021-05-22 02:23:02,012 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 105 transitions. Word has length 14 [2021-05-22 02:23:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:02,012 INFO L482 AbstractCegarLoop]: Abstraction has 55 states and 105 transitions. [2021-05-22 02:23:02,012 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) [2021-05-22 02:23:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 105 transitions. [2021-05-22 02:23:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:02,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:02,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:02,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 02:23:02,014 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:02,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:02,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1802957498, now seen corresponding path program 2 times [2021-05-22 02:23:02,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:02,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589932455] [2021-05-22 02:23:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:02,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:02,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589932455] [2021-05-22 02:23:02,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589932455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:02,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:02,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:02,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261558552] [2021-05-22 02:23:02,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:02,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:02,274 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) [2021-05-22 02:23:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:02,386 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2021-05-22 02:23:02,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:02,386 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 [2021-05-22 02:23:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:02,387 INFO L225 Difference]: With dead ends: 93 [2021-05-22 02:23:02,388 INFO L226 Difference]: Without dead ends: 65 [2021-05-22 02:23:02,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 239.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-22 02:23:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-05-22 02:23:02,397 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) [2021-05-22 02:23:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2021-05-22 02:23:02,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 14 [2021-05-22 02:23:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:02,398 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2021-05-22 02:23:02,398 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) [2021-05-22 02:23:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2021-05-22 02:23:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:02,398 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:02,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:02,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 02:23:02,399 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:02,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2138675526, now seen corresponding path program 3 times [2021-05-22 02:23:02,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:02,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725531866] [2021-05-22 02:23:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:02,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:02,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725531866] [2021-05-22 02:23:02,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725531866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:02,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:02,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:02,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322925901] [2021-05-22 02:23:02,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:02,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:02,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:02,539 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) [2021-05-22 02:23:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:02,658 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2021-05-22 02:23:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:02,659 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 [2021-05-22 02:23:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:02,663 INFO L225 Difference]: With dead ends: 80 [2021-05-22 02:23:02,663 INFO L226 Difference]: Without dead ends: 54 [2021-05-22 02:23:02,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-22 02:23:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-22 02:23:02,676 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) [2021-05-22 02:23:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2021-05-22 02:23:02,677 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 14 [2021-05-22 02:23:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:02,677 INFO L482 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2021-05-22 02:23:02,677 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) [2021-05-22 02:23:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2021-05-22 02:23:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:02,678 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:02,678 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:02,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 02:23:02,678 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1206578280, now seen corresponding path program 4 times [2021-05-22 02:23:02,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:02,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841392667] [2021-05-22 02:23:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:02,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:02,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841392667] [2021-05-22 02:23:02,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841392667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:02,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:02,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:02,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866179903] [2021-05-22 02:23:02,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:02,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:02,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:02,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:02,831 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) [2021-05-22 02:23:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:02,954 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2021-05-22 02:23:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:02,954 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 [2021-05-22 02:23:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:02,955 INFO L225 Difference]: With dead ends: 56 [2021-05-22 02:23:02,955 INFO L226 Difference]: Without dead ends: 33 [2021-05-22 02:23:02,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-22 02:23:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-22 02:23:02,957 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) [2021-05-22 02:23:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-05-22 02:23:02,957 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 14 [2021-05-22 02:23:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:02,957 INFO L482 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-05-22 02:23:02,957 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) [2021-05-22 02:23:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-05-22 02:23:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:02,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:02,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:02,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 02:23:02,958 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:02,958 INFO L82 PathProgramCache]: Analyzing trace with hash 531109480, now seen corresponding path program 5 times [2021-05-22 02:23:02,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:02,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582276126] [2021-05-22 02:23:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:03,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:03,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582276126] [2021-05-22 02:23:03,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582276126] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:03,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:03,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:03,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126823430] [2021-05-22 02:23:03,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:03,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:03,080 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) [2021-05-22 02:23:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:03,191 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2021-05-22 02:23:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:03,191 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 [2021-05-22 02:23:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:03,191 INFO L225 Difference]: With dead ends: 48 [2021-05-22 02:23:03,192 INFO L226 Difference]: Without dead ends: 27 [2021-05-22 02:23:03,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-22 02:23:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-22 02:23:03,193 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) [2021-05-22 02:23:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-05-22 02:23:03,194 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 14 [2021-05-22 02:23:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:03,194 INFO L482 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-05-22 02:23:03,194 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) [2021-05-22 02:23:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-05-22 02:23:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 02:23:03,194 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:23:03,194 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:23:03,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 02:23:03,194 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:23:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:23:03,195 INFO L82 PathProgramCache]: Analyzing trace with hash 202726598, now seen corresponding path program 6 times [2021-05-22 02:23:03,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:23:03,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059761292] [2021-05-22 02:23:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:23:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:23:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:23:03,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:23:03,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059761292] [2021-05-22 02:23:03,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059761292] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:23:03,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:23:03,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 02:23:03,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846693757] [2021-05-22 02:23:03,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 02:23:03,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:23:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 02:23:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 02:23:03,326 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) [2021-05-22 02:23:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:23:03,501 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2021-05-22 02:23:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 02:23:03,501 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 [2021-05-22 02:23:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:23:03,501 INFO L225 Difference]: With dead ends: 25 [2021-05-22 02:23:03,501 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 02:23:03,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 268.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 02:23:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 02:23:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 02:23:03,501 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) [2021-05-22 02:23:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 02:23:03,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-22 02:23:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:23:03,502 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 02:23:03,502 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) [2021-05-22 02:23:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 02:23:03,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 02:23:03,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 02:23:03,502 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 02:23:03,504 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-22 02:23:03,504 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:23:03,504 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:23:03,504 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:23:03,504 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:23:03,504 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:23:03,504 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:23:03,504 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:23:03,505 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 02:23:03,505 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-05-22 02:23:03,507 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) [2021-05-22 02:23:03,507 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) [2021-05-22 02:23:03,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 02:23:03,508 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-22 02:23:03,508 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 02:23:03,510 INFO L202 PluginConnector]: Adding new model sre-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 02:23:03 BasicIcfg [2021-05-22 02:23:03,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 02:23:03,511 INFO L168 Benchmark]: Toolchain (without parser) took 2568.71 ms. Allocated memory is still 364.9 MB. Free memory was 344.9 MB in the beginning and 170.2 MB in the end (delta: 174.7 MB). Peak memory consumption was 177.3 MB. Max. memory is 16.0 GB. [2021-05-22 02:23:03,511 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 364.9 MB. Free memory was 345.9 MB in the beginning and 345.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:23:03,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.67 ms. Allocated memory is still 364.9 MB. Free memory was 344.8 MB in the beginning and 343.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:23:03,511 INFO L168 Benchmark]: Boogie Preprocessor took 11.04 ms. Allocated memory is still 364.9 MB. Free memory was 343.3 MB in the beginning and 342.5 MB in the end (delta: 816.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:23:03,512 INFO L168 Benchmark]: RCFGBuilder took 160.75 ms. Allocated memory is still 364.9 MB. Free memory was 342.4 MB in the beginning and 332.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-22 02:23:03,512 INFO L168 Benchmark]: TraceAbstraction took 2372.64 ms. Allocated memory is still 364.9 MB. Free memory was 332.1 MB in the beginning and 170.2 MB in the end (delta: 161.9 MB). Peak memory consumption was 164.7 MB. Max. memory is 16.0 GB. [2021-05-22 02:23:03,513 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 364.9 MB. Free memory was 345.9 MB in the beginning and 345.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.67 ms. Allocated memory is still 364.9 MB. Free memory was 344.8 MB in the beginning and 343.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.04 ms. Allocated memory is still 364.9 MB. Free memory was 343.3 MB in the beginning and 342.5 MB in the end (delta: 816.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 160.75 ms. Allocated memory is still 364.9 MB. Free memory was 342.4 MB in the beginning and 332.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2372.64 ms. Allocated memory is still 364.9 MB. Free memory was 332.1 MB in the beginning and 170.2 MB in the end (delta: 161.9 MB). Peak memory consumption was 164.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2279.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 847.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 147 SDslu, 177 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1351.0ms 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: 44.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 67.7ms SatisfiabilityAnalysisTime, 1131.0ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2209 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...