/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 12:00:03,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 12:00:03,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 12:00:03,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-30 12:00:03,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-30 12:00:03,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-30 12:00:03,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-30 12:00:03,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-30 12:00:03,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-30 12:00:03,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-30 12:00:03,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-30 12:00:03,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-30 12:00:03,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 12:00:03,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 12:00:03,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 12:00:03,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 12:00:03,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 12:00:03,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 12:00:03,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 12:00:03,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 12:00:03,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 12:00:03,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 12:00:03,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 12:00:03,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 12:00:03,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-30 12:00:03,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-30 12:00:03,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-30 12:00:03,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-30 12:00:03,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-30 12:00:03,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-30 12:00:03,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-30 12:00:03,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-30 12:00:03,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-30 12:00:03,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-30 12:00:03,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-30 12:00:03,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-30 12:00:03,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-30 12:00:03,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-30 12:00:03,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-30 12:00:03,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-30 12:00:03,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-30 12:00:03,754 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.epf [2021-06-30 12:00:03,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 12:00:03,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 12:00:03,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 12:00:03,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 12:00:03,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 12:00:03,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 12:00:03,806 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 12:00:03,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 12:00:03,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 12:00:03,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 12:00:03,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 12:00:03,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 12:00:03,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 12:00:03,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 12:00:03,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 12:00:03,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 12:00:03,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 12:00:03,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 12:00:03,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 12:00:03,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 12:00:03,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 12:00:03,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 12:00:03,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 12:00:04,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 12:00:04,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 12:00:04,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 12:00:04,158 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 12:00:04,166 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 12:00:04,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl [2021-06-30 12:00:04,167 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl' [2021-06-30 12:00:04,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 12:00:04,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 12:00:04,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 12:00:04,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 12:00:04,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 12:00:04,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 12:00:04,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 12:00:04,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 12:00:04,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 12:00:04,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/1) ... [2021-06-30 12:00:04,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 12:00:04,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 12:00:04,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 12:00:04,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 12:00:04,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (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 [2021-06-30 12:00:04,427 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 12:00:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 12:00:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 12:00:04,428 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 12:00:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 12:00:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 12:00:04,429 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 12:00:04,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 12:00:04,638 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 12:00:04,640 INFO L202 PluginConnector]: Adding new model incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 12:00:04 BoogieIcfgContainer [2021-06-30 12:00:04,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 12:00:04,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 12:00:04,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 12:00:04,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 12:00:04,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:00:04" (1/2) ... [2021-06-30 12:00:04,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b23986 and model type incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 12:00:04, skipping insertion in model container [2021-06-30 12:00:04,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 12:00:04" (2/2) ... [2021-06-30 12:00:04,646 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr10.bpl [2021-06-30 12:00:04,654 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 12:00:04,655 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 12:00:04,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 12:00:04,656 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 12:00:04,834 INFO L149 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-06-30 12:00:04,856 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-30 12:00:04,886 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 12:00:04,886 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 12:00:04,886 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 12:00:04,886 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 12:00:04,886 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 12:00:04,886 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 12:00:04,886 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 12:00:04,886 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 12:00:04,911 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 64 transitions, 208 flow [2021-06-30 12:01:18,160 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 118101 states, 118098 states have (on average 9.75002116885976) internal successors, (1151458), 118098 states have internal predecessors, (1151458), 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) [2021-06-30 12:01:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 118101 states, 118098 states have (on average 9.75002116885976) internal successors, (1151458), 118098 states have internal predecessors, (1151458), 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) [2021-06-30 12:01:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-30 12:01:20,041 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:01:20,042 INFO L504 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] [2021-06-30 12:01:20,043 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:01:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:01:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2011156010, now seen corresponding path program 1 times [2021-06-30 12:01:20,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:01:20,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178127861] [2021-06-30 12:01:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:01:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:01:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:01:20,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:01:20,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178127861] [2021-06-30 12:01:20,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178127861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 12:01:20,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 12:01:20,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 12:01:20,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565031751] [2021-06-30 12:01:20,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 12:01:20,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:01:20,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 12:01:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 12:01:20,743 INFO L87 Difference]: Start difference. First operand has 118101 states, 118098 states have (on average 9.75002116885976) internal successors, (1151458), 118098 states have internal predecessors, (1151458), 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, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2021-06-30 12:01:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 12:01:23,998 INFO L93 Difference]: Finished difference Result 121168 states and 1180131 transitions. [2021-06-30 12:01:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 12:01:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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 32 [2021-06-30 12:01:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 12:01:26,079 INFO L225 Difference]: With dead ends: 121168 [2021-06-30 12:01:26,079 INFO L226 Difference]: Without dead ends: 121157 [2021-06-30 12:01:26,080 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 12:02:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121157 states. [2021-06-30 12:02:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121157 to 121157. [2021-06-30 12:02:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121157 states, 121156 states have (on average 9.740054145069166) internal successors, (1180066), 121156 states have internal predecessors, (1180066), 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) [2021-06-30 12:02:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121157 states to 121157 states and 1180066 transitions. [2021-06-30 12:02:11,522 INFO L78 Accepts]: Start accepts. Automaton has 121157 states and 1180066 transitions. Word has length 32 [2021-06-30 12:02:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:02:11,524 INFO L482 AbstractCegarLoop]: Abstraction has 121157 states and 1180066 transitions. [2021-06-30 12:02:11,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2021-06-30 12:02:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 121157 states and 1180066 transitions. [2021-06-30 12:02:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-06-30 12:02:12,494 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:02:12,495 INFO L504 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] [2021-06-30 12:02:12,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 12:02:12,496 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:02:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:02:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1728081292, now seen corresponding path program 1 times [2021-06-30 12:02:12,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:02:12,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334618016] [2021-06-30 12:02:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:02:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:02:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:02:12,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:02:12,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334618016] [2021-06-30 12:02:12,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334618016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 12:02:12,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 12:02:12,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 12:02:12,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415216995] [2021-06-30 12:02:12,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 12:02:12,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:02:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 12:02:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 12:02:12,958 INFO L87 Difference]: Start difference. First operand 121157 states and 1180066 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:02:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 12:02:16,016 INFO L93 Difference]: Finished difference Result 137537 states and 1335705 transitions. [2021-06-30 12:02:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 12:02:16,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-06-30 12:02:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 12:02:18,602 INFO L225 Difference]: With dead ends: 137537 [2021-06-30 12:02:18,602 INFO L226 Difference]: Without dead ends: 137359 [2021-06-30 12:02:18,603 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 12:02:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137359 states. [2021-06-30 12:02:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137359 to 134357. [2021-06-30 12:02:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134357 states, 134356 states have (on average 9.721649944922445) internal successors, (1306162), 134356 states have internal predecessors, (1306162), 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) [2021-06-30 12:03:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134357 states to 134357 states and 1306162 transitions. [2021-06-30 12:03:00,915 INFO L78 Accepts]: Start accepts. Automaton has 134357 states and 1306162 transitions. Word has length 34 [2021-06-30 12:03:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:03:00,915 INFO L482 AbstractCegarLoop]: Abstraction has 134357 states and 1306162 transitions. [2021-06-30 12:03:00,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:03:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 134357 states and 1306162 transitions. [2021-06-30 12:03:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-30 12:03:02,358 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:03:02,358 INFO L504 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] [2021-06-30 12:03:02,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 12:03:02,359 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:03:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:03:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2054927722, now seen corresponding path program 1 times [2021-06-30 12:03:02,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:03:02,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321104778] [2021-06-30 12:03:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:03:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:03:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:03:02,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:03:02,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321104778] [2021-06-30 12:03:02,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321104778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:03:02,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354555728] [2021-06-30 12:03:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:03:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:03:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-30 12:03:02,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:03:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:03:02,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354555728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:03:02,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:03:02,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-30 12:03:02,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111454191] [2021-06-30 12:03:02,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 12:03:02,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:03:02,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 12:03:02,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 12:03:02,778 INFO L87 Difference]: Start difference. First operand 134357 states and 1306162 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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)