/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-POR-NewStatesSleepPersistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 06:52:45,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 06:52:45,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 06:52:45,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 06:52:45,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 06:52:45,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 06:52:45,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 06:52:45,269 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-NewStatesSleepPersistent-NoLbe.epf [2021-07-10 06:52:45,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 06:52:45,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 06:52:45,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 06:52:45,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 06:52:45,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 06:52:45,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 06:52:45,300 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 06:52:45,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 06:52:45,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 06:52:45,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 06:52:45,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 06:52:45,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 06:52:45,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 06:52:45,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 06:52:45,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 06:52:45,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 06:52:45,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 06:52:45,604 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 06:52:45,607 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 06:52:45,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl [2021-07-10 06:52:45,607 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl' [2021-07-10 06:52:45,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 06:52:45,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 06:52:45,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 06:52:45,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 06:52:45,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 06:52:45,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 06:52:45,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 06:52:45,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 06:52:45,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 06:52:45,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... [2021-07-10 06:52:45,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 06:52:45,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 06:52:45,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 06:52:45,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 06:52:45,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 06:52:45,720 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 06:52:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 06:52:45,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 06:52:45,721 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 06:52:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 06:52:45,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 06:52:45,721 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 06:52:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 06:52:45,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 06:52:45,722 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 06:52:45,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 06:52:45,903 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 06:52:45,905 INFO L202 PluginConnector]: Adding new model nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:52:45 BoogieIcfgContainer [2021-07-10 06:52:45,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 06:52:45,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 06:52:45,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 06:52:45,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 06:52:45,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:52:45" (1/2) ... [2021-07-10 06:52:45,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b839186 and model type nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:52:45, skipping insertion in model container [2021-07-10 06:52:45,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:52:45" (2/2) ... [2021-07-10 06:52:45,910 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-counter-alt2.wvr.bpl [2021-07-10 06:52:45,931 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 06:52:45,932 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 06:52:45,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 06:52:45,932 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 06:52:45,981 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-10 06:52:46,013 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 [2021-07-10 06:52:46,097 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 06:52:46,097 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 06:52:46,097 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 06:52:46,097 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 06:52:46,097 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 06:52:46,097 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 06:52:46,097 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 06:52:46,098 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 06:52:46,227 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:52:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:52:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1583978233, now seen corresponding path program 1 times [2021-07-10 06:52:46,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:52:46,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829101004] [2021-07-10 06:52:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:52:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:46,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:52:46,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829101004] [2021-07-10 06:52:46,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829101004] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:46,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085819884] [2021-07-10 06:52:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-10 06:52:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 06:52:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:52:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:46,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085819884] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:46,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:52:46,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 06:52:46,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440288177] [2021-07-10 06:52:46,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 06:52:46,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:52:46,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 06:52:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-07-10 06:52:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:46,743 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:52:46,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 06:52:46,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:47,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 06:52:47,115 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:52:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:52:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1935227519, now seen corresponding path program 2 times [2021-07-10 06:52:47,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:52:47,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060164373] [2021-07-10 06:52:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:52:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:47,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:52:47,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060164373] [2021-07-10 06:52:47,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060164373] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:47,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544967238] [2021-07-10 06:52:47,287 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 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 [2021-07-10 06:52:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 06:52:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:52:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 06:52:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:52:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:47,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544967238] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:47,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:52:47,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-10 06:52:47,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387037825] [2021-07-10 06:52:47,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 06:52:47,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:52:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 06:52:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-07-10 06:52:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:47,623 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:52:47,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 06:52:47,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:47,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 06:52:48,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:52:48,517 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:52:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:52:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1956539317, now seen corresponding path program 3 times [2021-07-10 06:52:48,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:52:48,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454942415] [2021-07-10 06:52:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:52:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 06:52:48,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:52:48,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454942415] [2021-07-10 06:52:48,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454942415] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:48,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12368322] [2021-07-10 06:52:48,645 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 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 [2021-07-10 06:52:48,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-10 06:52:48,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:52:48,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-10 06:52:48,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:52:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:48,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12368322] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:48,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:52:48,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-07-10 06:52:48,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171941400] [2021-07-10 06:52:48,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-10 06:52:48,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:52:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-10 06:52:48,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-07-10 06:52:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:48,997 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:52:48,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 06:52:48,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:48,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 06:52:48,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 06:52:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-10 06:52:49,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:52:49,855 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:52:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:52:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1986353075, now seen corresponding path program 4 times [2021-07-10 06:52:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:52:49,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380981230] [2021-07-10 06:52:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:52:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:50,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:52:50,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380981230] [2021-07-10 06:52:50,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380981230] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:50,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300250885] [2021-07-10 06:52:50,156 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 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 [2021-07-10 06:52:50,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 06:52:50,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:52:50,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-10 06:52:50,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:52:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:52:51,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300250885] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:51,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:52:51,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 36 [2021-07-10 06:52:51,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883940061] [2021-07-10 06:52:51,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-07-10 06:52:51,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:52:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-07-10 06:52:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332 [2021-07-10 06:52:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:51,021 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:52:51,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 06:52:51,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:51,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 06:52:51,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-07-10 06:52:51,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:52:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 06:52:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 06:52:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-10 06:52:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-10 06:52:52,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:52:52,971 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:52:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:52:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash -341731743, now seen corresponding path program 5 times [2021-07-10 06:52:52,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:52:52,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143073115] [2021-07-10 06:52:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:52:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:52:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 195 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 06:52:53,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:52:53,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143073115] [2021-07-10 06:52:53,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143073115] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:52:53,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575893862] [2021-07-10 06:52:53,294 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 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 [2021-07-10 06:52:53,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-07-10 06:52:53,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:52:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 66 conjunts are in the unsatisfiable core [2021-07-10 06:52:53,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:53:08,922 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 1599 DAG size of output: 1425 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown