/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:02:01,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:02:01,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:02:01,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:02:01,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:02:01,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:02:01,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:02:01,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:02:01,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:02:01,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:02:01,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:02:01,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:02:01,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:02:01,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:02:01,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:02:01,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:02:01,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:02:01,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:02:01,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:02:01,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:02:01,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:02:01,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:02:01,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:02:01,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:02:01,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:02:01,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-09 23:02:01,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:02:01,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:02:01,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:02:01,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:02:01,998 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:02:01,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:02:01,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:02:01,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:02:01,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:02:01,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:02:01,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:02:02,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:02:02,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:02:02,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:02:02,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:02:02,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:02:02,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:02:02,012 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:02:02,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:02:02,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:02:02,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:02:02,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:02:02,284 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:02:02,286 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:02:02,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl [2021-07-09 23:02:02,287 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl' [2021-07-09 23:02:02,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:02:02,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:02:02,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:02:02,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:02:02,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:02:02,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:02:02,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:02:02,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:02:02,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:02:02,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... [2021-07-09 23:02:02,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:02:02,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:02:02,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:02:02,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:02:02,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:02:02,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:02:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:02:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:02:02,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:02:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:02:02,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:02:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:02:02,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:02:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:02:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:02:02,405 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:02:02,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:02:02,537 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:02:02,538 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:02:02 BoogieIcfgContainer [2021-07-09 23:02:02,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:02:02,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:02:02,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:02:02,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:02:02,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:02:02" (1/2) ... [2021-07-09 23:02:02,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d28d65b and model type min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:02:02, skipping insertion in model container [2021-07-09 23:02:02,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:02:02" (2/2) ... [2021-07-09 23:02:02,543 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-1.wvr.bpl [2021-07-09 23:02:02,547 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:02:02,547 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:02:02,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:02:02,548 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:02:02,575 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 23:02:02,592 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 23:02:02,606 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:02:02,606 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:02:02,607 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:02:02,607 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:02:02,607 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:02:02,607 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:02:02,607 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:02:02,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:02:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 161 states have (on average 2.1490683229813663) internal successors, (346), 231 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-09 23:02:02,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:02,758 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:02,759 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash -407015601, now seen corresponding path program 1 times [2021-07-09 23:02:02,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:02,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313669701] [2021-07-09 23:02:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:02,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:02,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:02:02,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:02,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:02,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:02,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:02,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:02,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:02,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:02,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313669701] [2021-07-09 23:02:02,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313669701] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:02,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:02,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:02:02,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20801319] [2021-07-09 23:02:02,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:02:02,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:02,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:02:02,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:02:02,973 INFO L87 Difference]: Start difference. First operand has 232 states, 161 states have (on average 2.1490683229813663) internal successors, (346), 231 states have internal predecessors, (346), 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 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:03,093 INFO L93 Difference]: Finished difference Result 647 states and 938 transitions. [2021-07-09 23:02:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:02:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-07-09 23:02:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:03,106 INFO L225 Difference]: With dead ends: 647 [2021-07-09 23:02:03,106 INFO L226 Difference]: Without dead ends: 170 [2021-07-09 23:02:03,107 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:02:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-07-09 23:02:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 124. [2021-07-09 23:02:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.829268292682927) internal successors, (225), 123 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 225 transitions. [2021-07-09 23:02:03,153 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 225 transitions. Word has length 19 [2021-07-09 23:02:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:03,153 INFO L482 AbstractCegarLoop]: Abstraction has 124 states and 225 transitions. [2021-07-09 23:02:03,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 225 transitions. [2021-07-09 23:02:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-09 23:02:03,158 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:03,158 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:03,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:02:03,159 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1740052346, now seen corresponding path program 1 times [2021-07-09 23:02:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:03,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019819018] [2021-07-09 23:02:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:03,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:03,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:03,215 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-09 23:02:03,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:03,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:03,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:03,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:03,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019819018] [2021-07-09 23:02:03,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019819018] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:03,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:03,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 23:02:03,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35077807] [2021-07-09 23:02:03,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:02:03,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:03,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:02:03,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:02:03,223 INFO L87 Difference]: Start difference. First operand 124 states and 225 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:03,226 INFO L93 Difference]: Finished difference Result 78 states and 123 transitions. [2021-07-09 23:02:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:02:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-07-09 23:02:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:03,228 INFO L225 Difference]: With dead ends: 78 [2021-07-09 23:02:03,228 INFO L226 Difference]: Without dead ends: 64 [2021-07-09 23:02:03,229 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:02:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-07-09 23:02:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-07-09 23:02:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.7301587301587302) internal successors, (109), 63 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 109 transitions. [2021-07-09 23:02:03,236 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 109 transitions. Word has length 22 [2021-07-09 23:02:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:03,237 INFO L482 AbstractCegarLoop]: Abstraction has 64 states and 109 transitions. [2021-07-09 23:02:03,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 109 transitions. [2021-07-09 23:02:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-09 23:02:03,239 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:03,239 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:03,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:02:03,239 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1811161829, now seen corresponding path program 1 times [2021-07-09 23:02:03,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:03,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88155505] [2021-07-09 23:02:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:03,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:03,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:03,272 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-09 23:02:03,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:03,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:03,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:03,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:03,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88155505] [2021-07-09 23:02:03,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88155505] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:03,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:03,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 23:02:03,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332327370] [2021-07-09 23:02:03,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:02:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:02:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:02:03,282 INFO L87 Difference]: Start difference. First operand 64 states and 109 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:03,282 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-07-09 23:02:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:02:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-07-09 23:02:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:03,282 INFO L225 Difference]: With dead ends: 7 [2021-07-09 23:02:03,282 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:02:03,282 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:02:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:02:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:02:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:02:03,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-07-09 23:02:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:03,283 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:02:03,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:02:03,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:02:03,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:02:03,285 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:02:03,286 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:02:03 BasicIcfg [2021-07-09 23:02:03,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:02:03,287 INFO L168 Benchmark]: Toolchain (without parser) took 981.98 ms. Allocated memory is still 184.5 MB. Free memory was 166.5 MB in the beginning and 137.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:03,287 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.44 ms. Allocated memory is still 184.5 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:02:03,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.57 ms. Allocated memory is still 184.5 MB. Free memory was 166.4 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:03,288 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 ms. Allocated memory is still 184.5 MB. Free memory was 164.9 MB in the beginning and 163.9 MB in the end (delta: 922.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:03,288 INFO L168 Benchmark]: RCFGBuilder took 183.31 ms. Allocated memory is still 184.5 MB. Free memory was 163.8 MB in the beginning and 152.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:03,289 INFO L168 Benchmark]: TraceAbstraction took 747.24 ms. Allocated memory is still 184.5 MB. Free memory was 151.8 MB in the beginning and 137.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:03,290 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 0.44 ms. Allocated memory is still 184.5 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.57 ms. Allocated memory is still 184.5 MB. Free memory was 166.4 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.74 ms. Allocated memory is still 184.5 MB. Free memory was 164.9 MB in the beginning and 163.9 MB in the end (delta: 922.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 183.31 ms. Allocated memory is still 184.5 MB. Free memory was 163.8 MB in the beginning and 152.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 747.24 ms. Allocated memory is still 184.5 MB. Free memory was 151.8 MB in the beginning and 137.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.6 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: 474, positive: 401, positive conditional: 401, positive unconditional: 0, negative: 73, negative conditional: 73, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 443, positive: 401, positive conditional: 0, positive unconditional: 401, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 112, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 112, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 443, positive: 295, positive conditional: 0, positive unconditional: 295, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 112, unknown conditional: 0, unknown unconditional: 112] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Independence queries for same thread: 31 - PositiveResult [Line: 58]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 679.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.6ms, AutomataDifference: 157.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 141.1ms, PartialOrderReductionTime: 130.6ms, HoareTripleCheckerStatistics: 59 SDtfs, 78 SDslu, 83 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 66.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 36.3ms SatisfiabilityAnalysisTime, 175.8ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...