/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/chl/exp-term-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:55:17,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:55:17,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:55:17,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 22:55:17,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:55:17,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:55:17,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:55:17,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:55:17,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:55:17,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:55:17,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:55:17,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:55:17,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:55:17,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:55:17,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:55:17,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:55:17,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 22:55:17,331 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 22:55:17,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:55:17,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:55:17,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:55:17,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:55:17,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:55:17,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:55:17,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:55:17,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:55:17,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:55:17,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:55:17,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:55:17,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:55:17,365 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:55:17,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:55:17,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:55:17,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:55:17,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:55:17,644 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 22:55:17,645 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 22:55:17,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/exp-term-subst.wvr.bpl [2021-07-09 22:55:17,646 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/exp-term-subst.wvr.bpl' [2021-07-09 22:55:17,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:55:17,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 22:55:17,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:55:17,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:55:17,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:55:17,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:55:17,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:55:17,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:55:17,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:55:17,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/1) ... [2021-07-09 22:55:17,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:55:17,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:55:17,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:55:17,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:55:17,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (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 22:55:17,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 22:55:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 22:55:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 22:55:17,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 22:55:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 22:55:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 22:55:17,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 22:55:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:55:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:55:17,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 22:55:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 22:55:17,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 22:55:17,742 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 22:55:17,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:55:17,876 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 22:55:17,878 INFO L202 PluginConnector]: Adding new model exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:55:17 BoogieIcfgContainer [2021-07-09 22:55:17,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:55:17,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:55:17,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:55:17,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:55:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:17" (1/2) ... [2021-07-09 22:55:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480d41c0 and model type exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:55:17, skipping insertion in model container [2021-07-09 22:55:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:55:17" (2/2) ... [2021-07-09 22:55:17,883 INFO L111 eAbstractionObserver]: Analyzing ICFG exp-term-subst.wvr.bpl [2021-07-09 22:55:17,886 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:55:17,887 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:55:17,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:55:17,887 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:55:17,917 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 22:55:17,932 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 22:55:17,945 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:55:17,945 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:55:17,945 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:55:17,945 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:55:17,945 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:55:17,946 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:55:17,946 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:55:17,946 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:55:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 36 states have (on average 1.5) 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) [2021-07-09 22:55:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 22:55:18,002 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:55:18,003 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:55:18,003 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 22:55:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:55:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash -244673546, now seen corresponding path program 1 times [2021-07-09 22:55:18,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:55:18,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264950137] [2021-07-09 22:55:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:55:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:55:18,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:55:18,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:55:18,326 INFO L142 QuantifierPusher]: treesize reduction 36, result has 43.8 percent of original size [2021-07-09 22:55:18,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 22:55:18,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 73.5 percent of original size [2021-07-09 22:55:18,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-09 22:55:18,537 INFO L142 QuantifierPusher]: treesize reduction 80, result has 48.7 percent of original size [2021-07-09 22:55:18,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-07-09 22:55:18,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:55:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:55:18,620 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 22:55:18,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:55:18,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264950137] [2021-07-09 22:55:18,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264950137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:55:18,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:55:18,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 22:55:18,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560247109] [2021-07-09 22:55:18,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 22:55:18,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:55:18,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 22:55:18,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 22:55:18,639 INFO L87 Difference]: Start difference. First operand has 55 states, 36 states have (on average 1.5) 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:55:18,880 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-07-09 22:55:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:55:18,884 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-07-09 22:55:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 22:55:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-07-09 22:55:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:55:18,888 INFO L225 Difference]: With dead ends: 53 [2021-07-09 22:55:18,889 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:55:18,889 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:55:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:55:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:55:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:55:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:55:18,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-09 22:55:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:55:18,912 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:55:18,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:55:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:55:18,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:55:18,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:55:18,933 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:55:18,935 INFO L202 PluginConnector]: Adding new model exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:55:18 BasicIcfg [2021-07-09 22:55:18,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:55:18,936 INFO L168 Benchmark]: Toolchain (without parser) took 1271.56 ms. Allocated memory was 219.2 MB in the beginning and 293.6 MB in the end (delta: 74.4 MB). Free memory was 199.4 MB in the beginning and 275.8 MB in the end (delta: -76.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:18,936 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 219.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:18,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 219.2 MB. Free memory was 199.4 MB in the beginning and 198.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:55:18,937 INFO L168 Benchmark]: Boogie Preprocessor took 9.28 ms. Allocated memory is still 219.2 MB. Free memory was 197.9 MB in the beginning and 197.0 MB in the end (delta: 891.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:55:18,937 INFO L168 Benchmark]: RCFGBuilder took 184.47 ms. Allocated memory is still 219.2 MB. Free memory was 197.0 MB in the beginning and 186.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-07-09 22:55:18,938 INFO L168 Benchmark]: TraceAbstraction took 1056.09 ms. Allocated memory was 219.2 MB in the beginning and 293.6 MB in the end (delta: 74.4 MB). Free memory was 186.3 MB in the beginning and 275.8 MB in the end (delta: -89.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:18,945 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 0.13 ms. Allocated memory is still 219.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 219.2 MB. Free memory was 199.4 MB in the beginning and 198.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.28 ms. Allocated memory is still 219.2 MB. Free memory was 197.9 MB in the beginning and 197.0 MB in the end (delta: 891.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 184.47 ms. Allocated memory is still 219.2 MB. Free memory was 197.0 MB in the beginning and 186.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1056.09 ms. Allocated memory was 219.2 MB in the beginning and 293.6 MB in the end (delta: 74.4 MB). Free memory was 186.3 MB in the beginning and 275.8 MB in the end (delta: -89.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 56, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 56, positive conditional: 0, positive unconditional: 56, 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: 24, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 24, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 56, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 989.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 265.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49.7ms, PartialOrderReductionTime: 40.5ms, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 24 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5ms SsaConstructionTime, 65.2ms SatisfiabilityAnalysisTime, 500.1ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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...