/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/barrier-loop.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:01:35,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:01:35,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:01:35,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:01:35,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:01:35,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:01:35,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:01:35,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:01:35,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:01:35,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:01:35,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:01:35,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:01:35,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:01:35,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:01:35,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:01:35,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:01:35,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:01:35,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:01:35,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:01:35,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:01:35,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:01:35,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:01:35,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:01:35,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:01:35,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:01:35,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:01:35,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:01:35,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:01:35,935 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 23:01:35,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:01:35,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:01:35,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:01:35,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:01:35,973 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:01:35,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:01:35,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:01:35,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:01:35,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:01:35,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:01:35,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:01:35,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:01:35,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:01:35,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:01:35,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:01:35,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:01:35,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:01:35,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:01:35,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:01:35,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:01:35,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:01:35,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:01:35,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:01:35,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:01:35,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:01:35,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:01:35,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:01:35,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:01:35,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:01:35,978 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:01:35,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:01:36,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:01:36,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:01:36,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:01:36,321 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:01:36,322 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:01:36,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl [2021-07-09 23:01:36,323 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl' [2021-07-09 23:01:36,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:01:36,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:01:36,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:36,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:01:36,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:01:36,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:36,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:01:36,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:01:36,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:01:36,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/1) ... [2021-07-09 23:01:36,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:01:36,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:01:36,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:01:36,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:01:36,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (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 23:01:36,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:01:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:01:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:01:36,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:01:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:01:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:01:36,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:01:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:01:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:01:36,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:01:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:01:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:01:36,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 23:01:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 23:01:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 23:01:36,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-09 23:01:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-09 23:01:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-09 23:01:36,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-07-09 23:01:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-07-09 23:01:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-07-09 23:01:36,454 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 23:01:36,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:01:36,715 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-09 23:01:36,717 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:36 BoogieIcfgContainer [2021-07-09 23:01:36,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:01:36,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:01:36,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:01:36,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:01:36,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:36" (1/2) ... [2021-07-09 23:01:36,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ebfd80 and model type barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:01:36, skipping insertion in model container [2021-07-09 23:01:36,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:36" (2/2) ... [2021-07-09 23:01:36,725 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier-loop.wvr.bpl [2021-07-09 23:01:36,745 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:01:36,745 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:01:36,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:01:36,746 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:01:36,854 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-07-09 23:01:36,875 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 23:01:36,892 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:01:36,892 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:01:36,892 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:01:36,892 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:01:36,900 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:01:36,901 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:01:36,901 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:01:36,901 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork3======== [2021-07-09 23:01:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 1044 states have (on average 2.2547892720306515) internal successors, (2354), 1248 states have internal predecessors, (2354), 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 23:01:37,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:01:37,225 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork3 was SAFE (1/3) [2021-07-09 23:01:37,226 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 23:01:37,234 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:01:37,235 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:01:37,235 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:01:37,235 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:01:37,235 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:01:37,235 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:01:37,235 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:01:37,235 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:01:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 10820 states, 8448 states have (on average 2.4359611742424243) internal successors, (20579), 10819 states have internal predecessors, (20579), 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 23:01:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-09 23:01:38,262 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:38,263 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, 1] [2021-07-09 23:01:38,263 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:38,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2135732798, now seen corresponding path program 1 times [2021-07-09 23:01:38,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:38,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998349674] [2021-07-09 23:01:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:38,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:38,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:38,500 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 23:01:38,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:38,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998349674] [2021-07-09 23:01:38,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998349674] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:38,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:38,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 23:01:38,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067102918] [2021-07-09 23:01:38,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:38,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:38,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:38,542 INFO L87 Difference]: Start difference. First operand has 10820 states, 8448 states have (on average 2.4359611742424243) internal successors, (20579), 10819 states have internal predecessors, (20579), 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23:01:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:38,708 INFO L93 Difference]: Finished difference Result 11214 states and 21278 transitions. [2021-07-09 23:01:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-07-09 23:01:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:38,726 INFO L225 Difference]: With dead ends: 11214 [2021-07-09 23:01:38,727 INFO L226 Difference]: Without dead ends: 199 [2021-07-09 23:01:38,728 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-07-09 23:01:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 189. [2021-07-09 23:01:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.9414893617021276) internal successors, (365), 188 states have internal predecessors, (365), 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 23:01:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 365 transitions. [2021-07-09 23:01:38,795 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 365 transitions. Word has length 23 [2021-07-09 23:01:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:38,795 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 365 transitions. [2021-07-09 23:01:38,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23:01:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 365 transitions. [2021-07-09 23:01:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 23:01:38,797 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:38,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:38,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:01:38,798 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:38,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:38,799 INFO L82 PathProgramCache]: Analyzing trace with hash -921903037, now seen corresponding path program 1 times [2021-07-09 23:01:38,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:38,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451658645] [2021-07-09 23:01:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:38,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:38,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:38,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:38,843 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 23:01:38,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:38,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451658645] [2021-07-09 23:01:38,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451658645] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:38,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:38,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:38,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359355674] [2021-07-09 23:01:38,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:38,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:38,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:38,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:38,849 INFO L87 Difference]: Start difference. First operand 189 states and 365 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:38,858 INFO L93 Difference]: Finished difference Result 205 states and 388 transitions. [2021-07-09 23:01:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-09 23:01:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:38,860 INFO L225 Difference]: With dead ends: 205 [2021-07-09 23:01:38,860 INFO L226 Difference]: Without dead ends: 202 [2021-07-09 23:01:38,861 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-07-09 23:01:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-07-09 23:01:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.8955223880597014) internal successors, (381), 201 states have internal predecessors, (381), 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 23:01:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 381 transitions. [2021-07-09 23:01:38,918 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 381 transitions. Word has length 31 [2021-07-09 23:01:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:38,918 INFO L482 AbstractCegarLoop]: Abstraction has 202 states and 381 transitions. [2021-07-09 23:01:38,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 381 transitions. [2021-07-09 23:01:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 23:01:38,935 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:38,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:38,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:01:38,936 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:38,940 INFO L82 PathProgramCache]: Analyzing trace with hash -136016413, now seen corresponding path program 1 times [2021-07-09 23:01:38,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:38,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078883143] [2021-07-09 23:01:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:38,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:38,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:38,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:38,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:38,988 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 23:01:38,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:38,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078883143] [2021-07-09 23:01:38,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078883143] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:38,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:38,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655952556] [2021-07-09 23:01:38,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:38,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:38,990 INFO L87 Difference]: Start difference. First operand 202 states and 381 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:39,022 INFO L93 Difference]: Finished difference Result 194 states and 350 transitions. [2021-07-09 23:01:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:39,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-09 23:01:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:39,023 INFO L225 Difference]: With dead ends: 194 [2021-07-09 23:01:39,024 INFO L226 Difference]: Without dead ends: 178 [2021-07-09 23:01:39,024 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-07-09 23:01:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-07-09 23:01:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.8305084745762712) internal successors, (324), 177 states have internal predecessors, (324), 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 23:01:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 324 transitions. [2021-07-09 23:01:39,044 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 324 transitions. Word has length 31 [2021-07-09 23:01:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:39,044 INFO L482 AbstractCegarLoop]: Abstraction has 178 states and 324 transitions. [2021-07-09 23:01:39,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 324 transitions. [2021-07-09 23:01:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 23:01:39,045 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:39,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:39,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:01:39,046 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash -344297211, now seen corresponding path program 1 times [2021-07-09 23:01:39,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:39,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874756497] [2021-07-09 23:01:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:39,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:39,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,085 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 23:01:39,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:39,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874756497] [2021-07-09 23:01:39,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874756497] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:39,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:39,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:39,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565486302] [2021-07-09 23:01:39,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:39,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:39,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:39,090 INFO L87 Difference]: Start difference. First operand 178 states and 324 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:39,100 INFO L93 Difference]: Finished difference Result 194 states and 347 transitions. [2021-07-09 23:01:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-09 23:01:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:39,101 INFO L225 Difference]: With dead ends: 194 [2021-07-09 23:01:39,101 INFO L226 Difference]: Without dead ends: 194 [2021-07-09 23:01:39,102 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 23:01:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-07-09 23:01:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2021-07-09 23:01:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.8148148148148149) internal successors, (343), 189 states have internal predecessors, (343), 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 23:01:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 343 transitions. [2021-07-09 23:01:39,108 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 343 transitions. Word has length 31 [2021-07-09 23:01:39,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:39,108 INFO L482 AbstractCegarLoop]: Abstraction has 190 states and 343 transitions. [2021-07-09 23:01:39,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 343 transitions. [2021-07-09 23:01:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 23:01:39,109 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:39,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:39,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:01:39,110 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:39,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1323066119, now seen corresponding path program 1 times [2021-07-09 23:01:39,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:39,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182280844] [2021-07-09 23:01:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:39,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:39,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,133 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 23:01:39,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:39,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182280844] [2021-07-09 23:01:39,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182280844] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:39,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:39,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:39,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594162420] [2021-07-09 23:01:39,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:39,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:39,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:39,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:39,135 INFO L87 Difference]: Start difference. First operand 190 states and 343 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:39,142 INFO L93 Difference]: Finished difference Result 188 states and 321 transitions. [2021-07-09 23:01:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-09 23:01:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:39,143 INFO L225 Difference]: With dead ends: 188 [2021-07-09 23:01:39,143 INFO L226 Difference]: Without dead ends: 167 [2021-07-09 23:01:39,144 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-07-09 23:01:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-07-09 23:01:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.7108433734939759) internal successors, (284), 166 states have internal predecessors, (284), 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 23:01:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 284 transitions. [2021-07-09 23:01:39,149 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 284 transitions. Word has length 31 [2021-07-09 23:01:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:39,149 INFO L482 AbstractCegarLoop]: Abstraction has 167 states and 284 transitions. [2021-07-09 23:01:39,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:01:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 284 transitions. [2021-07-09 23:01:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 23:01:39,150 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:39,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:39,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:01:39,150 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:39,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1646112718, now seen corresponding path program 1 times [2021-07-09 23:01:39,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:39,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352446571] [2021-07-09 23:01:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:39,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:39,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:39,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:39,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352446571] [2021-07-09 23:01:39,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352446571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:39,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:39,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:39,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239995400] [2021-07-09 23:01:39,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:39,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:39,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:39,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:39,174 INFO L87 Difference]: Start difference. First operand 167 states and 284 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:01:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:39,182 INFO L93 Difference]: Finished difference Result 158 states and 266 transitions. [2021-07-09 23:01:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:39,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-07-09 23:01:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:39,183 INFO L225 Difference]: With dead ends: 158 [2021-07-09 23:01:39,183 INFO L226 Difference]: Without dead ends: 158 [2021-07-09 23:01:39,183 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 23:01:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-07-09 23:01:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-07-09 23:01:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.694267515923567) internal successors, (266), 157 states have internal predecessors, (266), 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 23:01:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 266 transitions. [2021-07-09 23:01:39,187 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 266 transitions. Word has length 39 [2021-07-09 23:01:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:39,188 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 266 transitions. [2021-07-09 23:01:39,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:01:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 266 transitions. [2021-07-09 23:01:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 23:01:39,189 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:39,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:39,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:01:39,189 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:39,190 INFO L82 PathProgramCache]: Analyzing trace with hash 692655082, now seen corresponding path program 2 times [2021-07-09 23:01:39,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:39,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223161886] [2021-07-09 23:01:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 23:01:39,205 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 23:01:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 23:01:39,224 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 23:01:39,257 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-09 23:01:39,260 INFO L609 BasicCegarLoop]: Counterexample might be feasible [2021-07-09 23:01:39,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 23:01:39,261 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/3) [2021-07-09 23:01:39,262 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:01:39,307 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:01:39 BasicIcfg [2021-07-09 23:01:39,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:01:39,308 INFO L168 Benchmark]: Toolchain (without parser) took 2960.32 ms. Allocated memory was 183.5 MB in the beginning and 450.9 MB in the end (delta: 267.4 MB). Free memory was 162.8 MB in the beginning and 360.7 MB in the end (delta: -198.0 MB). Peak memory consumption was 69.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:39,308 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:01:39,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.05 ms. Allocated memory is still 183.5 MB. Free memory was 162.7 MB in the beginning and 161.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:39,309 INFO L168 Benchmark]: Boogie Preprocessor took 15.76 ms. Allocated memory is still 183.5 MB. Free memory was 161.2 MB in the beginning and 160.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:39,309 INFO L168 Benchmark]: RCFGBuilder took 328.50 ms. Allocated memory is still 183.5 MB. Free memory was 160.0 MB in the beginning and 144.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:39,310 INFO L168 Benchmark]: TraceAbstraction took 2588.22 ms. Allocated memory was 183.5 MB in the beginning and 450.9 MB in the end (delta: 267.4 MB). Free memory was 144.2 MB in the beginning and 360.7 MB in the end (delta: -216.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:39,312 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 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.05 ms. Allocated memory is still 183.5 MB. Free memory was 162.7 MB in the beginning and 161.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.76 ms. Allocated memory is still 183.5 MB. Free memory was 161.2 MB in the beginning and 160.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 328.50 ms. Allocated memory is still 183.5 MB. Free memory was 160.0 MB in the beginning and 144.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2588.22 ms. Allocated memory was 183.5 MB in the beginning and 450.9 MB in the end (delta: 267.4 MB). Free memory was 144.2 MB in the beginning and 360.7 MB in the end (delta: -216.5 MB). Peak memory consumption was 50.2 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: 3973, positive: 3515, positive conditional: 3515, positive unconditional: 0, negative: 458, negative conditional: 458, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3635, positive: 3515, positive conditional: 0, positive unconditional: 3515, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 431, positive: 421, positive conditional: 0, positive unconditional: 421, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 431, positive: 417, positive conditional: 0, positive unconditional: 417, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3635, positive: 3094, positive conditional: 0, positive unconditional: 3094, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 431, unknown conditional: 0, unknown unconditional: 431] , Statistics on independence cache: Total cache size (in pairs): 431, Positive cache size: 421, Positive conditional cache size: 0, Positive unconditional cache size: 421, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Independence queries for same thread: 338 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 55924, positive: 51294, positive conditional: 51294, positive unconditional: 0, negative: 4630, negative conditional: 4630, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 52244, positive: 51294, positive conditional: 0, positive unconditional: 51294, negative: 950, negative conditional: 0, negative unconditional: 950, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 944, positive: 924, positive conditional: 0, positive unconditional: 924, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 944, positive: 916, positive conditional: 0, positive unconditional: 916, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 52244, positive: 50370, positive conditional: 0, positive unconditional: 50370, negative: 930, negative conditional: 0, negative unconditional: 930, unknown: 944, unknown conditional: 0, unknown unconditional: 944] , Statistics on independence cache: Total cache size (in pairs): 944, Positive cache size: 924, Positive conditional cache size: 0, Positive unconditional cache size: 924, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 3680 - CounterExampleResult [Line: 121]: assertion can be violated assertion can be violated We found a FailurePath: [L115] 0 assume x_0 == x_8 && y_1 == y_9; VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L116] FORK 0 fork 1 thread1(); VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L117] FORK 0 fork 4, 4, 4, 4 thread4(); VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L60] 1 f1_2 := false; [L61] 1 f2_3 := false; VAL [f1_2=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L103] 2 f1_10 := false; [L104] 2 f2_11 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L63] FORK 1 fork 2, 2 thread2(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L64] FORK 1 fork 3, 3, 3 thread3(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L45] 4 temp_6 := y_1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_6=-1, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L46] 4 y_1 := temp_6 + 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_6=-1, x_0=-1, x_8=-1, y_1=0, y_9=-1] [L47] 4 f2_3 := true; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=true, temp_6=-1, x_0=-1, x_8=-1, y_1=0, y_9=-1] [L30] 3 temp_4 := x_0; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, x_0=-1, x_8=-1, y_1=0, y_9=-1] [L31] 3 x_0 := temp_4 + 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, x_0=0, x_8=-1, y_1=0, y_9=-1] [L32] 3 f1_2 := true; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, x_0=0, x_8=-1, y_1=0, y_9=-1] [L48] 4 assume f1_2; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, x_0=0, x_8=-1, y_1=0, y_9=-1] [L49] 4 temp_7 := x_0; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, temp_7=0, x_0=0, x_8=-1, y_1=0, y_9=-1] [L50] 4 x_0 := temp_7 + 1; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=0, y_9=-1] [L33] 3 assume f2_3; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=true, temp_4=-1, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=0, y_9=-1] [L51] 4 f2_3 := false; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=false, temp_4=-1, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=0, y_9=-1] [L34] 3 temp_5 := y_1; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=0, y_9=-1] [L35] 3 y_1 := temp_5 + 1; VAL [f1_10=false, f1_2=true, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L36] 3 f1_2 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L37] 3 assume !f2_3; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L52] 4 assume !f1_2; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L106] FORK 2 fork 5, 5, 5, 5, 5 thread5(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L107] FORK 2 fork 6, 6, 6, 6, 6, 6 thread6(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L65] JOIN 3 join 2, 2; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L66] JOIN 4 join 3, 3, 3; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L118] JOIN 1 join 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L108] JOIN 5 join 5, 5, 5, 5, 5; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L109] JOIN 6 join 6, 6, 6, 6, 6, 6; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L119] JOIN 2 join 4, 4, 4, 4; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L120] 0 assume !(x_0 == x_8 && y_1 == y_9); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] [L121] 0 assert false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_4=-1, temp_5=0, temp_6=-1, temp_7=0, x_0=1, x_8=-1, y_1=1, y_9=-1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread4Thread1of1ForFork3 with 1 thread instances CFG has 13 procedures, 120 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 334.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 39.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 283.0ms, PartialOrderReductionTime: 268.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 120 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2025.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 83.9ms, AutomataDifference: 300.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 963.1ms, PartialOrderReductionTime: 961.1ms, HoareTripleCheckerStatistics: 381 SDtfs, 186 SDslu, 140 SDs, 0 SdLazy, 37 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10820occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 146.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.3ms SsaConstructionTime, 58.3ms SatisfiabilityAnalysisTime, 216.0ms InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 6/6 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...