/usr/bin/java -Xmx16000000000 -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-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 11:18:07,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 11:18:07,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 11:18:08,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-06 11:18:08,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-06 11:18:08,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-06 11:18:08,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-06 11:18:08,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-06 11:18:08,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-06 11:18:08,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-06 11:18:08,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-06 11:18:08,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-06 11:18:08,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 11:18:08,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 11:18:08,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 11:18:08,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 11:18:08,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 11:18:08,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 11:18:08,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 11:18:08,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 11:18:08,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 11:18:08,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 11:18:08,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 11:18:08,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 11:18:08,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-06 11:18:08,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-06 11:18:08,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-06 11:18:08,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-06 11:18:08,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-06 11:18:08,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-06 11:18:08,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 11:18:08,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 11:18:08,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 11:18:08,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 11:18:08,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 11:18:08,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 11:18:08,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 11:18:08,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 11:18:08,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 11:18:08,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 11:18:08,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 11:18:08,051 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-POR-DelaySleep-NoLbe.epf [2021-06-06 11:18:08,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 11:18:08,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 11:18:08,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 11:18:08,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 11:18:08,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 11:18:08,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 11:18:08,071 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 11:18:08,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 11:18:08,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 11:18:08,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 11:18:08,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 11:18:08,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 11:18:08,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 11:18:08,075 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 11:18:08,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 11:18:08,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 11:18:08,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 11:18:08,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 11:18:08,357 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 11:18:08,358 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 11:18:08,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl [2021-06-06 11:18:08,359 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl' [2021-06-06 11:18:08,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 11:18:08,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 11:18:08,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 11:18:08,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 11:18:08,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 11:18:08,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 11:18:08,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 11:18:08,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 11:18:08,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 11:18:08,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/1) ... [2021-06-06 11:18:08,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 11:18:08,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 11:18:08,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 11:18:08,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 11:18:08,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (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 [2021-06-06 11:18:08,482 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 11:18:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 11:18:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 11:18:08,483 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 11:18:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 11:18:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 11:18:08,483 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 11:18:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 11:18:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 11:18:08,484 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 11:18:08,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 11:18:08,696 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 11:18:08,697 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:18:08 BoogieIcfgContainer [2021-06-06 11:18:08,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 11:18:08,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 11:18:08,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 11:18:08,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 11:18:08,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:18:08" (1/2) ... [2021-06-06 11:18:08,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738010c1 and model type threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:18:08, skipping insertion in model container [2021-06-06 11:18:08,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:18:08" (2/2) ... [2021-06-06 11:18:08,704 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-2.wvr.bpl [2021-06-06 11:18:08,725 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 11:18:08,726 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 11:18:08,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 11:18:08,727 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 11:18:08,791 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-06 11:18:08,809 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 11:18:08,869 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 11:18:08,869 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 11:18:08,869 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 11:18:08,869 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 11:18:08,869 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 11:18:08,869 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 11:18:08,869 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 11:18:08,869 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 11:18:08,943 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash -178355778, now seen corresponding path program 1 times [2021-06-06 11:18:08,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:08,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375565410] [2021-06-06 11:18:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:18:09,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:09,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375565410] [2021-06-06 11:18:09,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375565410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:18:09,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 11:18:09,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 11:18:09,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369295586] [2021-06-06 11:18:09,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 11:18:09,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:09,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 11:18:09,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 11:18:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:09,081 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:09,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-06-06 11:18:09,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:09,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 11:18:09,110 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash 721160386, now seen corresponding path program 2 times [2021-06-06 11:18:09,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:09,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927687177] [2021-06-06 11:18:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:18:09,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:09,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927687177] [2021-06-06 11:18:09,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927687177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:18:09,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 11:18:09,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 11:18:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737545447] [2021-06-06 11:18:09,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 11:18:09,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 11:18:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 11:18:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:09,156 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:09,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-06-06 11:18:09,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:09,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:09,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 11:18:09,180 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:09,181 INFO L82 PathProgramCache]: Analyzing trace with hash 658702084, now seen corresponding path program 3 times [2021-06-06 11:18:09,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:09,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718847235] [2021-06-06 11:18:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:09,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:09,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718847235] [2021-06-06 11:18:09,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718847235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:09,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708348131] [2021-06-06 11:18:09,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:09,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 11:18:09,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:18:09,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 11:18:09,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:18:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:10,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708348131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:10,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:18:10,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 11:18:10,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263568351] [2021-06-06 11:18:10,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 11:18:10,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:10,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 11:18:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-06-06 11:18:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:10,012 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:10,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 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) [2021-06-06 11:18:10,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:10,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:10,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:10,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:10,349 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:10,349 INFO L82 PathProgramCache]: Analyzing trace with hash 892677834, now seen corresponding path program 4 times [2021-06-06 11:18:10,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:10,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655499881] [2021-06-06 11:18:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-06 11:18:10,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:10,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655499881] [2021-06-06 11:18:10,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655499881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:10,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959620397] [2021-06-06 11:18:10,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:10,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 11:18:10,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:18:10,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-06 11:18:10,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:18:11,206 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-06-06 11:18:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:11,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959620397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:11,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:18:11,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2021-06-06 11:18:11,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906016291] [2021-06-06 11:18:11,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-06 11:18:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:11,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-06 11:18:11,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-06-06 11:18:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:11,730 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:11,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 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) [2021-06-06 11:18:11,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:11,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:11,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:11,735 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:12,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:12,219 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:12,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1904474506, now seen corresponding path program 5 times [2021-06-06 11:18:12,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:12,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848326311] [2021-06-06 11:18:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-06 11:18:12,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:12,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848326311] [2021-06-06 11:18:12,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848326311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:12,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552744305] [2021-06-06 11:18:12,556 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:12,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-06 11:18:12,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:18:12,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-06 11:18:12,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:18:13,330 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-06-06 11:18:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:13,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552744305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:13,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:18:13,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 26 [2021-06-06 11:18:13,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273673791] [2021-06-06 11:18:13,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-06 11:18:13,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-06 11:18:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-06-06 11:18:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:13,679 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:13,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 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) [2021-06-06 11:18:13,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:13,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:13,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:13,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:13,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:14,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:14,547 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:14,547 INFO L82 PathProgramCache]: Analyzing trace with hash -72906826, now seen corresponding path program 6 times [2021-06-06 11:18:14,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:14,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451946353] [2021-06-06 11:18:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-06 11:18:15,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:15,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451946353] [2021-06-06 11:18:15,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451946353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:15,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679979100] [2021-06-06 11:18:15,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:15,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-06 11:18:15,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:18:15,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 11:18:15,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:18:15,818 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-06 11:18:16,424 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-06-06 11:18:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:16,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679979100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:16,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:18:16,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 33 [2021-06-06 11:18:16,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176759854] [2021-06-06 11:18:16,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-06 11:18:16,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-06 11:18:16,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 11:18:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:16,726 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:16,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 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) [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:16,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 11:18:17,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-06 11:18:17,977 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1873519174, now seen corresponding path program 7 times [2021-06-06 11:18:17,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:17,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494460414] [2021-06-06 11:18:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-06-06 11:18:17,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:17,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494460414] [2021-06-06 11:18:17,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494460414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:18:17,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 11:18:17,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 11:18:17,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905099464] [2021-06-06 11:18:17,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 11:18:17,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 11:18:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 11:18:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:17,999 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:17,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:17,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 11:18:18,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 11:18:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:18,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-06 11:18:18,014 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:18:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:18:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash 478880434, now seen corresponding path program 8 times [2021-06-06 11:18:18,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:18:18,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055783542] [2021-06-06 11:18:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:18:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:18:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-06-06 11:18:18,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:18:18,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055783542] [2021-06-06 11:18:18,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055783542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:18,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813713918] [2021-06-06 11:18:18,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:18,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 11:18:18,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:18:18,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 11:18:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:18:19,358 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-06 11:18:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:18:20,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813713918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:18:20,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:18:20,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22] total 33 [2021-06-06 11:18:20,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870803530] [2021-06-06 11:18:20,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-06 11:18:20,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:18:20,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-06 11:18:20,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 11:18:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:20,210 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:18:20,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 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) [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 11:18:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:20,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:18:22,983 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2021-06-06 11:18:24,255 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-06-06 11:18:24,572 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-06 11:18:25,180 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2021-06-06 11:18:25,326 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2021-06-06 11:18:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:18:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 11:18:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 11:18:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 11:18:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 11:18:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:18:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 11:18:27,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:18:27,932 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 11:18:27,934 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 11:18:27 BasicIcfg [2021-06-06 11:18:27,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 11:18:27,934 INFO L168 Benchmark]: Toolchain (without parser) took 19554.71 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 327.7 MB in the beginning and 217.0 MB in the end (delta: 110.6 MB). Peak memory consumption was 266.1 MB. Max. memory is 16.0 GB. [2021-06-06 11:18:27,935 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 348.1 MB. Free memory was 328.8 MB in the beginning and 328.8 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 11:18:27,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.26 ms. Allocated memory is still 348.1 MB. Free memory was 327.6 MB in the beginning and 326.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 11:18:27,935 INFO L168 Benchmark]: Boogie Preprocessor took 13.10 ms. Allocated memory is still 348.1 MB. Free memory was 326.2 MB in the beginning and 325.3 MB in the end (delta: 923.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 11:18:27,935 INFO L168 Benchmark]: RCFGBuilder took 279.16 ms. Allocated memory is still 348.1 MB. Free memory was 325.2 MB in the beginning and 313.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-06 11:18:27,935 INFO L168 Benchmark]: TraceAbstraction took 19234.79 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 312.9 MB in the beginning and 217.0 MB in the end (delta: 95.8 MB). Peak memory consumption was 251.4 MB. Max. memory is 16.0 GB. [2021-06-06 11:18:27,938 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 348.1 MB. Free memory was 328.8 MB in the beginning and 328.8 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.26 ms. Allocated memory is still 348.1 MB. Free memory was 327.6 MB in the beginning and 326.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.10 ms. Allocated memory is still 348.1 MB. Free memory was 326.2 MB in the beginning and 325.3 MB in the end (delta: 923.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 279.16 ms. Allocated memory is still 348.1 MB. Free memory was 325.2 MB in the beginning and 313.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 19234.79 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 312.9 MB in the beginning and 217.0 MB in the end (delta: 95.8 MB). Peak memory consumption was 251.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1106, positive: 816, positive conditional: 816, positive unconditional: 0, negative: 290, negative conditional: 290, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 882, positive: 816, positive conditional: 816, positive unconditional: 0, negative: 66, negative conditional: 66, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 882, positive: 746, positive conditional: 0, positive unconditional: 746, negative: 136, negative conditional: 0, negative unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 27, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 27, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 882, positive: 722, positive conditional: 0, positive unconditional: 722, negative: 133, negative conditional: 0, negative unconditional: 133, unknown: 27, unknown conditional: 0, unknown unconditional: 27] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321, SemanticConditionEliminator.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 639, positive: 70, positive conditional: 70, positive unconditional: 0, negative: 569, negative conditional: 248, negative unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 81, positive: 15, positive conditional: 13, positive unconditional: 2, negative: 66, negative conditional: 63, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 249, positive: 59, positive conditional: 55, positive unconditional: 4, negative: 191, negative conditional: 145, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 639, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 506, negative conditional: 185, negative unconditional: 321, unknown: 76, unknown conditional: 76, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 66, Negative conditional cache size: 63, Negative unconditional cache size: 3, Eliminated conditions: 321 ], Maximal queried relation: 8, Independence queries for same thread: 224 - PositiveResult [Line: 55]: 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, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19106.3ms, OverallIterations: 8, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 9725.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 42.6ms SsaConstructionTime, 208.7ms SatisfiabilityAnalysisTime, 7763.2ms InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 12804 SizeOfPredicates, 25 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 222/723 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...