/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/test/easy7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 18:19:40,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 18:19:40,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 18:19:40,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 18:19:40,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 18:19:40,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 18:19:40,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 18:19:40,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 18:19:40,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 18:19:40,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 18:19:40,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 18:19:40,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 18:19:40,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 18:19:40,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 18:19:40,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 18:19:40,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 18:19:40,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 18:19:40,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 18:19:40,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 18:19:40,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 18:19:40,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 18:19:40,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 18:19:40,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 18:19:40,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 18:19:40,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 18:19:40,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 18:19:40,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 18:19:40,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 18:19:40,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-16 18:19:40,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 18:19:40,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 18:19:40,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 18:19:40,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 18:19:40,830 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 18:19:40,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 18:19:40,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 18:19:40,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 18:19:40,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 18:19:40,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 18:19:40,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 18:19:40,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 18:19:40,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 18:19:40,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 18:19:40,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 18:19:40,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 18:19:40,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 18:19:40,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 18:19:40,834 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 18:19:40,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 18:19:41,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 18:19:41,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 18:19:41,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 18:19:41,133 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 18:19:41,134 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 18:19:41,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl [2021-06-16 18:19:41,135 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl' [2021-06-16 18:19:41,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 18:19:41,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 18:19:41,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 18:19:41,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 18:19:41,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 18:19:41,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 18:19:41,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 18:19:41,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 18:19:41,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 18:19:41,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... [2021-06-16 18:19:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 18:19:41,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 18:19:41,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 18:19:41,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 18:19:41,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 18:19:41,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 18:19:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 18:19:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 18:19:41,272 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 18:19:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 18:19:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 18:19:41,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 18:19:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 18:19:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 18:19:41,274 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 18:19:41,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 18:19:41,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 18:19:41,408 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 06:19:41 BoogieIcfgContainer [2021-06-16 18:19:41,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 18:19:41,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 18:19:41,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 18:19:41,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 18:19:41,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 06:19:41" (1/2) ... [2021-06-16 18:19:41,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b10e16 and model type easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 06:19:41, skipping insertion in model container [2021-06-16 18:19:41,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 06:19:41" (2/2) ... [2021-06-16 18:19:41,415 INFO L111 eAbstractionObserver]: Analyzing ICFG easy7.wvr.bpl [2021-06-16 18:19:41,419 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 18:19:41,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 18:19:41,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 18:19:41,420 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 18:19:41,457 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-16 18:19:41,478 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-16 18:19:41,493 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 18:19:41,493 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 18:19:41,493 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 18:19:41,493 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 18:19:41,493 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 18:19:41,494 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 18:19:41,494 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 18:19:41,494 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 18:19:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.255813953488372) internal successors, (54), 54 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-16 18:19:41,566 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 18:19:41,567 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 18:19:41,567 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 18:19:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 18:19:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash 716115407, now seen corresponding path program 1 times [2021-06-16 18:19:41,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 18:19:41,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974695712] [2021-06-16 18:19:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 18:19:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 18:19:41,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 18:19:41,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 18:19:41,821 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 18:19:41,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 18:19:41,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 18:19:41,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 18:19:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 18:19:41,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 18:19:41,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974695712] [2021-06-16 18:19:41,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974695712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 18:19:41,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 18:19:41,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 18:19:41,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863288920] [2021-06-16 18:19:41,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 18:19:41,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 18:19:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 18:19:41,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 18:19:41,866 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.255813953488372) internal successors, (54), 54 states have internal predecessors, (54), 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 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 18:19:42,042 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-06-16 18:19:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 18:19:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-06-16 18:19:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 18:19:42,048 INFO L225 Difference]: With dead ends: 51 [2021-06-16 18:19:42,048 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 18:19:42,051 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 18:19:42,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 18:19:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 18:19:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 18:19:42,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-06-16 18:19:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 18:19:42,070 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 18:19:42,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 18:19:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 18:19:42,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 18:19:42,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 18:19:42,072 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 18:19:42,074 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 06:19:42 BasicIcfg [2021-06-16 18:19:42,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 18:19:42,075 INFO L168 Benchmark]: Toolchain (without parser) took 916.52 ms. Allocated memory is still 181.4 MB. Free memory was 161.0 MB in the beginning and 142.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:42,075 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 18:19:42,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.27 ms. Allocated memory is still 181.4 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:42,076 INFO L168 Benchmark]: Boogie Preprocessor took 13.00 ms. Allocated memory is still 181.4 MB. Free memory was 159.4 MB in the beginning and 158.5 MB in the end (delta: 890.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:42,077 INFO L168 Benchmark]: RCFGBuilder took 213.36 ms. Allocated memory is still 181.4 MB. Free memory was 158.5 MB in the beginning and 149.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:42,078 INFO L168 Benchmark]: TraceAbstraction took 664.12 ms. Allocated memory is still 181.4 MB. Free memory was 148.6 MB in the beginning and 142.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2021-06-16 18:19:42,080 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 0.16 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.27 ms. Allocated memory is still 181.4 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.00 ms. Allocated memory is still 181.4 MB. Free memory was 159.4 MB in the beginning and 158.5 MB in the end (delta: 890.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 213.36 ms. Allocated memory is still 181.4 MB. Free memory was 158.5 MB in the beginning and 149.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 664.12 ms. Allocated memory is still 181.4 MB. Free memory was 148.6 MB in the beginning and 142.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.7 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: 36, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 35, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 35, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 35, unknown conditional: 0, unknown unconditional: 35] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 1 - PositiveResult [Line: 39]: 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 5 procedures, 36 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 580.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.9ms, AutomataDifference: 206.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 64.6ms, PartialOrderReductionTime: 55.3ms, HoareTripleCheckerStatistics: 19 SDtfs, 8 SDslu, 61 SDs, 0 SdLazy, 113 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 129.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.5ms SsaConstructionTime, 24.1ms SatisfiabilityAnalysisTime, 187.6ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...