/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-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 22:46:50,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 22:46:50,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 22:46:50,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 22:46:50,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-06-13 22:46:50,790 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 22:46:50,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 22:46:50,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 22:46:50,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 22:46:50,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 22:46:50,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 22:46:50,793 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 22:46:50,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 22:46:50,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 22:46:50,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 22:46:50,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 22:46:50,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 22:46:50,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 22:46:50,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 22:46:50,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 22:46:50,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 22:46:50,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 22:46:50,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 22:46:50,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 22:46:50,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 22:46:50,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 22:46:50,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 22:46:50,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 22:46:50,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 22:46:50,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 22:46:50,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 22:46:50,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 22:46:50,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 22:46:50,799 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 22:46:50,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 22:46:51,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 22:46:51,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 22:46:51,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 22:46:51,136 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 22:46:51,161 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 22:46:51,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-4.wvr.bpl [2021-06-13 22:46:51,162 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-4.wvr.bpl' [2021-06-13 22:46:51,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 22:46:51,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 22:46:51,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 22:46:51,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 22:46:51,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 22:46:51,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 22:46:51,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 22:46:51,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 22:46:51,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 22:46:51,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/1) ... [2021-06-13 22:46:51,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 22:46:51,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 22:46:51,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 22:46:51,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 22:46:51,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (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 [2021-06-13 22:46:51,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 22:46:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 22:46:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 22:46:51,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 22:46:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 22:46:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 22:46:51,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 22:46:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 22:46:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 22:46:51,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 22:46:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 22:46:51,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-13 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-13 22:46:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-13 22:46:51,337 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 22:46:51,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 22:46:51,534 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 22:46:51,536 INFO L202 PluginConnector]: Adding new model mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 10:46:51 BoogieIcfgContainer [2021-06-13 22:46:51,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 22:46:51,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 22:46:51,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 22:46:51,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 22:46:51,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 10:46:51" (1/2) ... [2021-06-13 22:46:51,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caab10f and model type mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 10:46:51, skipping insertion in model container [2021-06-13 22:46:51,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 10:46:51" (2/2) ... [2021-06-13 22:46:51,542 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-4.wvr.bpl [2021-06-13 22:46:51,563 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 22:46:51,564 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 22:46:51,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 22:46:51,564 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 22:46:51,618 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-13 22:46:51,635 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-13 22:46:51,708 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 22:46:51,709 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 22:46:51,709 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 22:46:51,709 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 22:46:51,709 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 22:46:51,709 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 22:46:51,709 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 22:46:51,710 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 22:46:51,867 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:46:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:46:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1487721164, now seen corresponding path program 1 times [2021-06-13 22:46:51,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:46:51,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892145422] [2021-06-13 22:46:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:46:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:46:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 85 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 22:46:52,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:46:52,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892145422] [2021-06-13 22:46:52,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892145422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:52,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287015101] [2021-06-13 22:46:52,668 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 [2021-06-13 22:46:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:46:52,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-13 22:46:52,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:46:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-13 22:46:53,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287015101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:53,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:46:53,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 27 [2021-06-13 22:46:53,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968315969] [2021-06-13 22:46:53,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-13 22:46:53,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:46:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-13 22:46:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-06-13 22:46:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:53,222 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:46:53,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 27 states have internal predecessors, (97), 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) [2021-06-13 22:46:53,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:54,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-13 22:46:54,356 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:46:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:46:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash -872603272, now seen corresponding path program 2 times [2021-06-13 22:46:54,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:46:54,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482220346] [2021-06-13 22:46:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:46:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:46:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 156 proven. 44 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-06-13 22:46:54,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:46:54,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482220346] [2021-06-13 22:46:54,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482220346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:54,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103190644] [2021-06-13 22:46:54,517 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 [2021-06-13 22:46:54,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 22:46:54,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:46:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-13 22:46:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:46:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 156 proven. 41 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-06-13 22:46:54,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103190644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:54,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:46:54,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-06-13 22:46:54,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947683268] [2021-06-13 22:46:54,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 22:46:54,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:46:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 22:46:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 22:46:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:54,776 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:46:54,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-06-13 22:46:54,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:54,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:46:55,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:46:55,185 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:46:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:46:55,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1207249488, now seen corresponding path program 3 times [2021-06-13 22:46:55,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:46:55,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914358333] [2021-06-13 22:46:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:46:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:46:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 59 proven. 208 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-13 22:46:55,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:46:55,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914358333] [2021-06-13 22:46:55,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914358333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:55,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136312408] [2021-06-13 22:46:55,663 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 [2021-06-13 22:46:55,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-13 22:46:55,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:46:55,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-13 22:46:55,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:46:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 67 proven. 174 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-13 22:46:56,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136312408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:56,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:46:56,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12] total 36 [2021-06-13 22:46:56,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613057574] [2021-06-13 22:46:56,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-13 22:46:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:46:56,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-13 22:46:56,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2021-06-13 22:46:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:56,146 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:46:56,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.675675675675676) internal successors, (136), 36 states have internal predecessors, (136), 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) [2021-06-13 22:46:56,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:56,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:46:56,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:46:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:46:57,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:46:57,513 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:46:57,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:46:57,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1946889140, now seen corresponding path program 4 times [2021-06-13 22:46:57,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:46:57,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376110788] [2021-06-13 22:46:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:46:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:46:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 101 proven. 317 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-13 22:46:58,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:46:58,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376110788] [2021-06-13 22:46:58,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376110788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:58,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946831176] [2021-06-13 22:46:58,158 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 [2021-06-13 22:46:58,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 22:46:58,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:46:58,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-13 22:46:58,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:46:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 299 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-06-13 22:46:58,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946831176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:46:58,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:46:58,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 39 [2021-06-13 22:46:58,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998790366] [2021-06-13 22:46:58,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-13 22:46:58,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:46:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-13 22:46:58,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1384, Unknown=0, NotChecked=0, Total=1560 [2021-06-13 22:46:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:46:58,640 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:46:58,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 3.325) internal successors, (133), 39 states have internal predecessors, (133), 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) [2021-06-13 22:46:58,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:46:58,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:46:58,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:46:58,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-13 22:47:00,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:00,349 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:47:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:47:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash 932041798, now seen corresponding path program 5 times [2021-06-13 22:47:00,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:47:00,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216897553] [2021-06-13 22:47:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:47:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 142 proven. 461 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-13 22:47:01,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:47:01,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216897553] [2021-06-13 22:47:01,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216897553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:01,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727705926] [2021-06-13 22:47:01,175 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 [2021-06-13 22:47:01,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-13 22:47:01,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:47:01,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-13 22:47:01,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:47:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 273 proven. 145 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-06-13 22:47:01,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727705926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:01,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:47:01,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 51 [2021-06-13 22:47:01,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889777356] [2021-06-13 22:47:01,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-13 22:47:01,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:47:01,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-13 22:47:01,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2334, Unknown=0, NotChecked=0, Total=2652 [2021-06-13 22:47:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:01,782 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:47:01,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 51 states have internal predecessors, (161), 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) [2021-06-13 22:47:01,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:01,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:01,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:01,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-13 22:47:01,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:12,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:12,632 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:47:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:47:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1031963558, now seen corresponding path program 6 times [2021-06-13 22:47:12,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:47:12,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160257100] [2021-06-13 22:47:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:47:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 214 proven. 471 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-06-13 22:47:12,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:47:12,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160257100] [2021-06-13 22:47:12,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160257100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:12,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911504702] [2021-06-13 22:47:12,772 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 [2021-06-13 22:47:12,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-13 22:47:12,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:47:12,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-13 22:47:12,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:47:13,178 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-13 22:47:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 358 proven. 509 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-13 22:47:13,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911504702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:13,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:47:13,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 27] total 34 [2021-06-13 22:47:13,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359257156] [2021-06-13 22:47:13,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-13 22:47:13,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:47:13,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-13 22:47:13,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2021-06-13 22:47:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:13,696 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:47:13,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.314285714285714) internal successors, (186), 34 states have internal predecessors, (186), 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) [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:13,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:26,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:26,122 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:47:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:47:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash -627003886, now seen corresponding path program 7 times [2021-06-13 22:47:26,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:47:26,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465173030] [2021-06-13 22:47:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:47:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2474 backedges. 928 proven. 794 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-06-13 22:47:26,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:47:26,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465173030] [2021-06-13 22:47:26,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465173030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:26,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837639190] [2021-06-13 22:47:26,306 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 [2021-06-13 22:47:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:26,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-13 22:47:26,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:47:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2474 backedges. 928 proven. 764 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2021-06-13 22:47:26,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837639190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:26,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:47:26,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-06-13 22:47:26,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325297639] [2021-06-13 22:47:26,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 22:47:26,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:47:26,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 22:47:26,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-13 22:47:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:26,787 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:47:26,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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) [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:26,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:47:36,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-13 22:47:36,056 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:47:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:47:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1499805200, now seen corresponding path program 8 times [2021-06-13 22:47:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:47:36,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153542353] [2021-06-13 22:47:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:47:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 905 proven. 927 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2021-06-13 22:47:36,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:47:36,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153542353] [2021-06-13 22:47:36,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153542353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:36,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543839525] [2021-06-13 22:47:36,211 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:36,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 22:47:36,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:47:36,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 70 conjunts are in the unsatisfiable core [2021-06-13 22:47:36,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:47:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 905 proven. 897 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2021-06-13 22:47:36,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543839525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:36,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:47:36,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-06-13 22:47:36,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567375198] [2021-06-13 22:47:36,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 22:47:36,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:47:36,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 22:47:36,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-06-13 22:47:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:36,677 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:47:36,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:47:36,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:47:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 22:47:46,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:46,496 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:47:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:47:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash 958903950, now seen corresponding path program 9 times [2021-06-13 22:47:46,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:47:46,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229070527] [2021-06-13 22:47:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:47:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:47:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2574 backedges. 870 proven. 1068 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-06-13 22:47:46,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:47:46,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229070527] [2021-06-13 22:47:46,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229070527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:46,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743451141] [2021-06-13 22:47:46,684 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:47:46,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-13 22:47:46,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:47:46,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-13 22:47:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:47:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2574 backedges. 1404 proven. 137 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2021-06-13 22:47:47,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743451141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:47:47,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:47:47,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-06-13 22:47:47,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236326550] [2021-06-13 22:47:47,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-13 22:47:47,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:47:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-13 22:47:47,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-06-13 22:47:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:47,362 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:47:47,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 21 states have internal predecessors, (142), 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) [2021-06-13 22:47:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:47:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:47:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-13 22:47:47,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:47:47,765 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 22:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-13 22:48:13,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:48:13,100 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 22:48:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 22:48:13,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1143400902, now seen corresponding path program 10 times [2021-06-13 22:48:13,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 22:48:13,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431152545] [2021-06-13 22:48:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 22:48:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 22:48:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 1352 proven. 1691 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2021-06-13 22:48:13,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 22:48:13,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431152545] [2021-06-13 22:48:13,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431152545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:48:13,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909753428] [2021-06-13 22:48:13,312 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 22:48:13,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 22:48:13,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 22:48:13,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 94 conjunts are in the unsatisfiable core [2021-06-13 22:48:13,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 22:48:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 1352 proven. 1649 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2021-06-13 22:48:13,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909753428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 22:48:13,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 22:48:13,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-06-13 22:48:13,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579775841] [2021-06-13 22:48:13,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-13 22:48:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 22:48:13,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-13 22:48:13,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-06-13 22:48:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 22:48:13,928 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 22:48:13,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 71 states. [2021-06-13 22:48:13,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.