/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/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 10:10:35,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 10:10:35,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 10:10:35,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 10:10:35,136 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 10:10:35,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 10:10:35,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 10:10:35,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 10:10:35,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 10:10:35,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 10:10:35,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 10:10:35,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 10:10:35,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 10:10:35,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 10:10:35,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 10:10:35,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 10:10:35,159 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 10:10:35,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 10:10:35,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 10:10:35,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 10:10:35,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 10:10:35,422 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 10:10:35,424 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 10:10:35,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-06-06 10:10:35,425 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-06-06 10:10:35,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 10:10:35,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 10:10:35,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 10:10:35,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 10:10:35,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 10:10:35,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 10:10:35,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 10:10:35,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 10:10:35,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 10:10:35,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/1) ... [2021-06-06 10:10:35,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 10:10:35,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 10:10:35,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 10:10:35,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 10:10:35,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (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 10:10:35,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 10:10:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 10:10:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 10:10:35,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 10:10:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 10:10:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 10:10:35,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 10:10:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 10:10:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 10:10:35,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 10:10:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 10:10:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 10:10:35,565 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 10:10:35,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 10:10:35,798 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 10:10:35,799 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 10:10:35 BoogieIcfgContainer [2021-06-06 10:10:35,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 10:10:35,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 10:10:35,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 10:10:35,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 10:10:35,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:10:35" (1/2) ... [2021-06-06 10:10:35,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd2014c and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 10:10:35, skipping insertion in model container [2021-06-06 10:10:35,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 10:10:35" (2/2) ... [2021-06-06 10:10:35,804 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-06-06 10:10:35,808 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 10:10:35,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 10:10:35,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 10:10:35,808 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 10:10:35,846 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 10:10:35,870 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 10:10:35,921 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 10:10:35,921 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 10:10:35,921 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 10:10:35,921 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 10:10:35,921 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 10:10:35,921 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 10:10:35,921 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 10:10:35,922 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 10:10:36,022 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -124964664, now seen corresponding path program 1 times [2021-06-06 10:10:36,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:36,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871322600] [2021-06-06 10:10:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:36,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:36,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871322600] [2021-06-06 10:10:36,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871322600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:36,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855349274] [2021-06-06 10:10:36,153 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 [2021-06-06 10:10:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:36,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-06 10:10:36,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:36,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855349274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:36,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:36,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-06 10:10:36,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735576210] [2021-06-06 10:10:36,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 10:10:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:36,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 10:10:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 10:10:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:36,288 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:36,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 10:10:36,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:36,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-06 10:10:36,536 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash 435101322, now seen corresponding path program 2 times [2021-06-06 10:10:36,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:36,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035445117] [2021-06-06 10:10:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:36,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:36,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035445117] [2021-06-06 10:10:36,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035445117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:36,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169854928] [2021-06-06 10:10:36,596 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 [2021-06-06 10:10:36,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 10:10:36,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 10:10:36,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-06 10:10:36,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:36,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169854928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:36,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:36,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-06-06 10:10:36,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480178091] [2021-06-06 10:10:36,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 10:10:36,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:36,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 10:10:36,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-06 10:10:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:36,682 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:36,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 10:10:36,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:36,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:36,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:10:36,969 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1787601868, now seen corresponding path program 3 times [2021-06-06 10:10:36,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:36,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863944870] [2021-06-06 10:10:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:37,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:37,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863944870] [2021-06-06 10:10:37,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863944870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:37,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094162731] [2021-06-06 10:10:37,050 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 [2021-06-06 10:10:37,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 10:10:37,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 10:10:37,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 10:10:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:37,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094162731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:37,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:37,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-06 10:10:37,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036567093] [2021-06-06 10:10:37,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 10:10:37,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:37,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 10:10:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-06 10:10:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:37,192 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:37,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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 10:10:37,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:37,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:37,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:37,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:10:37,453 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash 165535886, now seen corresponding path program 4 times [2021-06-06 10:10:37,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:37,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225873633] [2021-06-06 10:10:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:37,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:37,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225873633] [2021-06-06 10:10:37,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225873633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:37,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770482615] [2021-06-06 10:10:37,518 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 [2021-06-06 10:10:37,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 10:10:37,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 10:10:37,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 10:10:37,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:37,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770482615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:37,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:37,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-06 10:10:37,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893000262] [2021-06-06 10:10:37,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 10:10:37,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 10:10:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 10:10:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:37,707 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:37,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 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 10:10:37,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:37,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:37,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:37,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:10:38,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-06 10:10:38,010 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash 433255632, now seen corresponding path program 5 times [2021-06-06 10:10:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:38,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436683978] [2021-06-06 10:10:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:38,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:38,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436683978] [2021-06-06 10:10:38,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436683978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:38,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408229371] [2021-06-06 10:10:38,069 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 [2021-06-06 10:10:38,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 10:10:38,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 10:10:38,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 10:10:38,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:38,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408229371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:38,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:38,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 10:10:38,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735259457] [2021-06-06 10:10:38,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 10:10:38,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 10:10:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 10:10:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:38,275 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:38,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 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 10:10:38,275 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:38,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:38,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:38,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:10:38,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:10:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 10:10:38,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:10:38,653 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1341292182, now seen corresponding path program 6 times [2021-06-06 10:10:38,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:38,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653002101] [2021-06-06 10:10:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:38,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:10:38,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653002101] [2021-06-06 10:10:38,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653002101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:38,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299685205] [2021-06-06 10:10:38,889 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:10:38,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-06 10:10:38,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 10:10:38,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-06 10:10:38,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:10:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:10:39,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299685205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:10:39,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:10:39,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-06 10:10:39,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388845069] [2021-06-06 10:10:39,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 10:10:39,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:10:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 10:10:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-06 10:10:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:39,306 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:10:39,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 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 10:10:39,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:39,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:39,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:39,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:10:39,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 10:10:39,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 10:10:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 10:10:39,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-06 10:10:39,867 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:10:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:10:39,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1385765852, now seen corresponding path program 7 times [2021-06-06 10:10:39,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:10:39,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289401184] [2021-06-06 10:10:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:10:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:10:42,179 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 90 DAG size of output: 19 [2021-06-06 10:10:59,174 WARN L205 SmtUtils]: Spent 16.95 s on a formula simplification. DAG size of input: 143 DAG size of output: 30 [2021-06-06 10:12:58,906 WARN L205 SmtUtils]: Spent 1.99 m on a formula simplification. DAG size of input: 172 DAG size of output: 39 [2021-06-06 10:15:34,318 WARN L205 SmtUtils]: Spent 2.59 m on a formula simplification. DAG size of input: 183 DAG size of output: 14 [2021-06-06 10:18:30,465 WARN L205 SmtUtils]: Spent 2.94 m on a formula simplification. DAG size of input: 192 DAG size of output: 13 [2021-06-06 10:18:57,052 WARN L205 SmtUtils]: Spent 26.56 s on a formula simplification. DAG size of input: 144 DAG size of output: 15 [2021-06-06 10:18:57,626 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 10 [2021-06-06 10:18:58,275 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 13 [2021-06-06 10:18:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:18:58,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 10:18:58,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289401184] [2021-06-06 10:18:58,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289401184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:18:58,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891219652] [2021-06-06 10:18:58,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:18:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 10:18:58,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 10:18:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 10:18:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 10:18:58,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891219652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 10:18:58,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 10:18:58,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-06 10:18:58,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986757247] [2021-06-06 10:18:58,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-06 10:18:58,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 10:18:58,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-06 10:18:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-06-06 10:18:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:18:58,794 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 10:18:58,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 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 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 10:18:58,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 10:18:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 10:18:59,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 10:18:59,652 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 10:18:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 10:18:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash 454304422, now seen corresponding path program 8 times [2021-06-06 10:18:59,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 10:18:59,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94545846] [2021-06-06 10:18:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 10:19:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown