/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 16:43:56,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 16:43:56,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 16:43:56,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 16:43:56,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 16:43:56,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 16:43:56,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 16:43:56,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 16:43:56,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 16:43:56,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 16:43:56,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 16:43:56,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 16:43:56,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 16:43:56,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 16:43:56,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 16:43:56,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 16:43:56,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 16:43:56,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 16:43:56,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 16:43:56,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 16:43:56,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 16:43:56,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 16:43:56,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 16:43:56,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 16:43:56,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 16:43:56,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 16:43:56,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 16:43:56,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 16:43:56,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-16 16:43:56,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 16:43:56,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 16:43:56,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 16:43:56,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 16:43:56,660 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 16:43:56,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 16:43:56,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 16:43:56,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 16:43:56,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 16:43:56,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 16:43:56,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 16:43:56,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 16:43:56,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 16:43:56,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 16:43:56,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 16:43:56,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 16:43:56,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 16:43:56,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:43:56,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 16:43:56,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 16:43:56,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 16:43:56,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 16:43:56,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 16:43:56,664 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 16:43:56,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 16:43:56,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 16:43:57,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 16:43:57,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 16:43:57,004 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 16:43:57,005 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 16:43:57,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-06-16 16:43:57,006 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-06-16 16:43:57,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 16:43:57,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 16:43:57,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 16:43:57,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 16:43:57,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 16:43:57,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 16:43:57,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 16:43:57,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 16:43:57,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 16:43:57,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/1) ... [2021-06-16 16:43:57,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 16:43:57,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 16:43:57,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 16:43:57,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 16:43:57,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (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 [2021-06-16 16:43:57,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-16 16:43:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-16 16:43:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-16 16:43:57,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-16 16:43:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-16 16:43:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-16 16:43:57,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-16 16:43:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-16 16:43:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-16 16:43:57,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-16 16:43:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-16 16:43:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-16 16:43:57,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-16 16:43:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-16 16:43:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-16 16:43:57,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 16:43:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 16:43:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 16:43:57,139 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-16 16:43:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-16 16:43:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-16 16:43:57,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 16:43:57,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 16:43:57,315 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 16:43:57,316 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:43:57 BoogieIcfgContainer [2021-06-16 16:43:57,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 16:43:57,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 16:43:57,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 16:43:57,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 16:43:57,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:57" (1/2) ... [2021-06-16 16:43:57,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54041d09 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:43:57, skipping insertion in model container [2021-06-16 16:43:57,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:43:57" (2/2) ... [2021-06-16 16:43:57,323 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-06-16 16:43:57,334 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 16:43:57,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 16:43:57,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 16:43:57,335 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 16:43:57,493 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-06-16 16:43:57,513 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-16 16:43:57,539 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 16:43:57,539 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 16:43:57,539 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 16:43:57,539 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 16:43:57,539 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 16:43:57,540 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 16:43:57,540 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 16:43:57,540 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 16:43:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 4463 states, 3797 states have (on average 1.9065051356333949) internal successors, (7239), 4462 states have internal predecessors, (7239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-16 16:43:58,219 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:58,220 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:58,220 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2146286969, now seen corresponding path program 1 times [2021-06-16 16:43:58,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:58,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219678854] [2021-06-16 16:43:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:58,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:58,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:58,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:58,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219678854] [2021-06-16 16:43:58,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219678854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:58,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:58,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:58,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590399062] [2021-06-16 16:43:58,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:58,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:58,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,424 INFO L87 Difference]: Start difference. First operand has 4463 states, 3797 states have (on average 1.9065051356333949) internal successors, (7239), 4462 states have internal predecessors, (7239), 0 states have call successors, (0), 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 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:58,486 INFO L93 Difference]: Finished difference Result 3545 states and 5106 transitions. [2021-06-16 16:43:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:58,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-06-16 16:43:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:58,496 INFO L225 Difference]: With dead ends: 3545 [2021-06-16 16:43:58,496 INFO L226 Difference]: Without dead ends: 67 [2021-06-16 16:43:58,504 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-06-16 16:43:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-06-16 16:43:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 140 transitions. [2021-06-16 16:43:58,539 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 140 transitions. Word has length 25 [2021-06-16 16:43:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:58,541 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 140 transitions. [2021-06-16 16:43:58,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 140 transitions. [2021-06-16 16:43:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-16 16:43:58,542 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:58,542 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:58,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 16:43:58,542 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:58,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1261206437, now seen corresponding path program 1 times [2021-06-16 16:43:58,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:58,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801176142] [2021-06-16 16:43:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:58,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:58,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:58,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:58,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801176142] [2021-06-16 16:43:58,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801176142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:58,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:58,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:58,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361955061] [2021-06-16 16:43:58,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:58,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:58,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,604 INFO L87 Difference]: Start difference. First operand 67 states and 140 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:58,618 INFO L93 Difference]: Finished difference Result 46 states and 71 transitions. [2021-06-16 16:43:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-06-16 16:43:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:58,622 INFO L225 Difference]: With dead ends: 46 [2021-06-16 16:43:58,622 INFO L226 Difference]: Without dead ends: 46 [2021-06-16 16:43:58,623 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-06-16 16:43:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-06-16 16:43:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 45 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 71 transitions. [2021-06-16 16:43:58,630 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 71 transitions. Word has length 25 [2021-06-16 16:43:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:58,631 INFO L482 AbstractCegarLoop]: Abstraction has 46 states and 71 transitions. [2021-06-16 16:43:58,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 71 transitions. [2021-06-16 16:43:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-16 16:43:58,633 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:58,633 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:58,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 16:43:58,633 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash -373703717, now seen corresponding path program 1 times [2021-06-16 16:43:58,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:58,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803169565] [2021-06-16 16:43:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:58,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:58,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:58,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:58,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803169565] [2021-06-16 16:43:58,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803169565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:58,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:58,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:58,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687759362] [2021-06-16 16:43:58,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:58,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:58,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:58,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,664 INFO L87 Difference]: Start difference. First operand 46 states and 71 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:58,671 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-06-16 16:43:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-06-16 16:43:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:58,672 INFO L225 Difference]: With dead ends: 30 [2021-06-16 16:43:58,672 INFO L226 Difference]: Without dead ends: 30 [2021-06-16 16:43:58,672 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-06-16 16:43:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-06-16 16:43:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-06-16 16:43:58,675 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2021-06-16 16:43:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:58,675 INFO L482 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-06-16 16:43:58,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-06-16 16:43:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-16 16:43:58,676 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:58,676 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:58,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 16:43:58,676 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash 513799933, now seen corresponding path program 1 times [2021-06-16 16:43:58,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:58,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709644246] [2021-06-16 16:43:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:58,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:58,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:58,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 16:43:58,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 16:43:58,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 16:43:58,805 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-16 16:43:58,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 16:43:58,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-16 16:43:58,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-16 16:43:58,888 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-16 16:43:58,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-16 16:43:58,933 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-16 16:43:58,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-16 16:43:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:58,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:58,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709644246] [2021-06-16 16:43:58,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709644246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:58,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:58,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 16:43:58,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328003648] [2021-06-16 16:43:58,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 16:43:58,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 16:43:58,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-16 16:43:58,971 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:59,018 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-06-16 16:43:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 16:43:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-06-16 16:43:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:59,019 INFO L225 Difference]: With dead ends: 29 [2021-06-16 16:43:59,019 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 16:43:59,023 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-16 16:43:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 16:43:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 16:43:59,024 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) [2021-06-16 16:43:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 16:43:59,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-06-16 16:43:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:59,024 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 16:43:59,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:43:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 16:43:59,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 16:43:59,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 16:43:59,027 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 16:43:59,030 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 04:43:59 BasicIcfg [2021-06-16 16:43:59,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 16:43:59,032 INFO L168 Benchmark]: Toolchain (without parser) took 1988.28 ms. Allocated memory is still 184.5 MB. Free memory was 165.8 MB in the beginning and 88.4 MB in the end (delta: 77.3 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:59,032 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 184.5 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:43:59,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.13 ms. Allocated memory is still 184.5 MB. Free memory was 165.8 MB in the beginning and 164.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:59,034 INFO L168 Benchmark]: Boogie Preprocessor took 13.80 ms. Allocated memory is still 184.5 MB. Free memory was 164.1 MB in the beginning and 163.3 MB in the end (delta: 862.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:59,034 INFO L168 Benchmark]: RCFGBuilder took 231.68 ms. Allocated memory is still 184.5 MB. Free memory was 163.3 MB in the beginning and 152.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:59,036 INFO L168 Benchmark]: TraceAbstraction took 1712.57 ms. Allocated memory is still 184.5 MB. Free memory was 152.2 MB in the beginning and 88.4 MB in the end (delta: 63.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:59,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 184.5 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.13 ms. Allocated memory is still 184.5 MB. Free memory was 165.8 MB in the beginning and 164.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.80 ms. Allocated memory is still 184.5 MB. Free memory was 164.1 MB in the beginning and 163.3 MB in the end (delta: 862.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 231.68 ms. Allocated memory is still 184.5 MB. Free memory was 163.3 MB in the beginning and 152.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1712.57 ms. Allocated memory is still 184.5 MB. Free memory was 152.2 MB in the beginning and 88.4 MB in the end (delta: 63.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 30163, positive: 26322, positive conditional: 26322, positive unconditional: 0, negative: 3841, negative conditional: 3841, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 26322, positive: 26322, positive conditional: 0, positive unconditional: 26322, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 645, positive: 645, positive conditional: 0, positive unconditional: 645, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 645, positive: 645, positive conditional: 0, positive unconditional: 645, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26322, positive: 25677, positive conditional: 0, positive unconditional: 25677, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 645, unknown conditional: 0, unknown unconditional: 645] , Statistics on independence cache: Total cache size (in pairs): 645, Positive cache size: 645, Positive conditional cache size: 0, Positive unconditional cache size: 645, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 3841 - PositiveResult [Line: 25]: 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 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1488.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 79.4ms, AutomataDifference: 174.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 602.4ms, PartialOrderReductionTime: 585.0ms, HoareTripleCheckerStatistics: 157 SDtfs, 185 SDslu, 56 SDs, 0 SdLazy, 15 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 161.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.8ms SsaConstructionTime, 61.2ms SatisfiabilityAnalysisTime, 391.2ms InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...