/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-Sleep-SemanticLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-13 01:19:04,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-13 01:19:04,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-13 01:19:04,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-13 01:19:04,970 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-Sleep-SemanticLbe-Delay.epf [2021-03-13 01:19:04,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-13 01:19:04,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-13 01:19:04,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-13 01:19:04,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-13 01:19:05,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-13 01:19:05,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-13 01:19:05,001 INFO L138 SettingsManager]: * Use SBE=true [2021-03-13 01:19:05,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-13 01:19:05,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-13 01:19:05,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-13 01:19:05,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-13 01:19:05,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-13 01:19:05,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-13 01:19:05,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-13 01:19:05,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-13 01:19:05,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-13 01:19:05,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-13 01:19:05,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-13 01:19:05,004 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-13 01:19:05,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-13 01:19:05,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-13 01:19:05,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-13 01:19:05,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-13 01:19:05,275 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-13 01:19:05,277 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-13 01:19:05,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-1.wvr.bpl [2021-03-13 01:19:05,278 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-1.wvr.bpl' [2021-03-13 01:19:05,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-13 01:19:05,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-13 01:19:05,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-13 01:19:05,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-13 01:19:05,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-13 01:19:05,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-13 01:19:05,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-13 01:19:05,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-13 01:19:05,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-13 01:19:05,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/1) ... [2021-03-13 01:19:05,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-13 01:19:05,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-13 01:19:05,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-13 01:19:05,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-13 01:19:05,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (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 [2021-03-13 01:19:05,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-13 01:19:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-13 01:19:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-13 01:19:05,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-13 01:19:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-13 01:19:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-13 01:19:05,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-13 01:19:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-13 01:19:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-13 01:19:05,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-13 01:19:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-13 01:19:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-13 01:19:05,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-13 01:19:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-13 01:19:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-13 01:19:05,399 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-13 01:19:05,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-13 01:19:05,618 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-13 01:19:05,618 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-03-13 01:19:05,618 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-03-13 01:19:05,619 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-03-13 01:19:05,619 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2021-03-13 01:19:05,620 INFO L202 PluginConnector]: Adding new model parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 01:19:05 BoogieIcfgContainer [2021-03-13 01:19:05,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-13 01:19:05,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-13 01:19:05,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-13 01:19:05,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-13 01:19:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 01:19:05" (1/2) ... [2021-03-13 01:19:05,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf85f53 and model type parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 01:19:05, skipping insertion in model container [2021-03-13 01:19:05,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 01:19:05" (2/2) ... [2021-03-13 01:19:05,625 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-sum-1.wvr.bpl [2021-03-13 01:19:05,629 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-13 01:19:05,636 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-13 01:19:05,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-13 01:19:05,640 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-13 01:19:05,717 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-13 01:19:05,730 INFO L253 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 [2021-03-13 01:19:05,798 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-13 01:19:05,798 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-13 01:19:05,798 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-13 01:19:05,798 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-13 01:19:05,798 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-13 01:19:05,798 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-13 01:19:05,798 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-13 01:19:05,798 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-13 01:19:05,807 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-13 01:19:05,807 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 29 transitions, 90 flow [2021-03-13 01:19:05,812 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 29 transitions, 90 flow [2021-03-13 01:19:05,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 29 transitions, 90 flow [2021-03-13 01:19:05,844 INFO L129 PetriNetUnfolder]: 4/25 cut-off events. [2021-03-13 01:19:05,844 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-13 01:19:05,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 25 events. 4/25 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 23 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-03-13 01:19:05,849 INFO L116 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-13 01:19:06,122 INFO L131 LiptonReduction]: Checked pairs total: 216 [2021-03-13 01:19:06,123 INFO L133 LiptonReduction]: Total number of compositions: 7 [2021-03-13 01:19:06,145 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash 600771855, now seen corresponding path program 1 times [2021-03-13 01:19:06,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:06,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020208168] [2021-03-13 01:19:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:06,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020208168] [2021-03-13 01:19:06,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-13 01:19:06,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-13 01:19:06,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008932044] [2021-03-13 01:19:06,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-13 01:19:06,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-13 01:19:06,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-13 01:19:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,246 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:06,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-03-13 01:19:06,247 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:06,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-13 01:19:06,262 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1648644743, now seen corresponding path program 1 times [2021-03-13 01:19:06,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:06,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538985089] [2021-03-13 01:19:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538985089] [2021-03-13 01:19:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349021130] [2021-03-13 01:19:06,293 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 [2021-03-13 01:19:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:06,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-13 01:19:06,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:06,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-13 01:19:06,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2021-03-13 01:19:06,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647853342] [2021-03-13 01:19:06,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-13 01:19:06,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:06,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-13 01:19:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-13 01:19:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,391 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:06,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-03-13 01:19:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:06,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:06,672 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash -933467296, now seen corresponding path program 1 times [2021-03-13 01:19:06,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:06,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597260637] [2021-03-13 01:19:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597260637] [2021-03-13 01:19:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473203855] [2021-03-13 01:19:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-03-13 01:19:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:06,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-13 01:19:06,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:06,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-13 01:19:06,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2021-03-13 01:19:06,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808055727] [2021-03-13 01:19:06,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-13 01:19:06,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-13 01:19:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-13 01:19:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,828 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:06,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-03-13 01:19:06,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:06,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:06,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:07,114 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash 449581716, now seen corresponding path program 1 times [2021-03-13 01:19:07,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:07,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766448336] [2021-03-13 01:19:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:07,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766448336] [2021-03-13 01:19:07,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988685488] [2021-03-13 01:19:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-03-13 01:19:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-13 01:19:07,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:07,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-03-13 01:19:07,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 01:19:07,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 01:19:07,327 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-13 01:19:07,327 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-03-13 01:19:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:07,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:07,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-13 01:19:07,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429438378] [2021-03-13 01:19:07,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-13 01:19:07,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:07,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-13 01:19:07,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-13 01:19:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:07,356 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:07,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-13 01:19:07,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:07,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:07,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:07,660 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:07,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1779835055, now seen corresponding path program 2 times [2021-03-13 01:19:07,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:07,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361878087] [2021-03-13 01:19:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:07,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361878087] [2021-03-13 01:19:07,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648617028] [2021-03-13 01:19:07,710 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 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 [2021-03-13 01:19:07,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-13 01:19:07,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:07,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-13 01:19:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:07,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:07,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-03-13 01:19:07,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087849247] [2021-03-13 01:19:07,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-13 01:19:07,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:07,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-13 01:19:07,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-13 01:19:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:07,810 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:07,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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) [2021-03-13 01:19:07,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:07,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:07,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:08,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:08,097 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1090407527, now seen corresponding path program 3 times [2021-03-13 01:19:08,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:08,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942924699] [2021-03-13 01:19:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942924699] [2021-03-13 01:19:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012781113] [2021-03-13 01:19:08,216 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 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 [2021-03-13 01:19:08,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-13 01:19:08,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:08,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-13 01:19:08,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:08,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 01:19:08,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 48 [2021-03-13 01:19:08,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-13 01:19:08,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 01:19:08,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-13 01:19:08,397 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:8 [2021-03-13 01:19:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:08,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:08,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-13 01:19:08,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314546927] [2021-03-13 01:19:08,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-13 01:19:08,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:08,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-13 01:19:08,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-13 01:19:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:08,425 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:08,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-13 01:19:08,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:08,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:08,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:08,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:08,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:08,795 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1284808778, now seen corresponding path program 4 times [2021-03-13 01:19:08,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:08,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097313926] [2021-03-13 01:19:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:08,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097313926] [2021-03-13 01:19:08,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164570658] [2021-03-13 01:19:08,848 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 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 [2021-03-13 01:19:08,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-13 01:19:08,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:08,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-13 01:19:08,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:08,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:08,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-03-13 01:19:08,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561111185] [2021-03-13 01:19:08,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-13 01:19:08,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-13 01:19:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-13 01:19:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:08,949 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:08,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-03-13 01:19:08,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:08,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:08,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:08,950 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:08,950 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:08,950 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:09,250 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2097607340, now seen corresponding path program 5 times [2021-03-13 01:19:09,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828650638] [2021-03-13 01:19:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:09,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828650638] [2021-03-13 01:19:09,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869156524] [2021-03-13 01:19:09,304 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 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 [2021-03-13 01:19:09,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-13 01:19:09,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:09,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-13 01:19:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:09,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:09,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-03-13 01:19:09,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941521287] [2021-03-13 01:19:09,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-13 01:19:09,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:09,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-13 01:19:09,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-13 01:19:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:09,390 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:09,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-13 01:19:09,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:09,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-13 01:19:09,703 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash 350691508, now seen corresponding path program 6 times [2021-03-13 01:19:09,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:09,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793292224] [2021-03-13 01:19:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:09,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793292224] [2021-03-13 01:19:09,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446510246] [2021-03-13 01:19:09,879 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 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 [2021-03-13 01:19:09,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-13 01:19:09,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:09,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-13 01:19:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:10,028 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 01:19:10,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 53 [2021-03-13 01:19:10,047 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-13 01:19:10,130 INFO L628 ElimStorePlain]: treesize reduction 66, result has 47.2 percent of original size [2021-03-13 01:19:10,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-13 01:19:10,132 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:59 [2021-03-13 01:19:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:10,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:10,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-03-13 01:19:10,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99543662] [2021-03-13 01:19:10,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-13 01:19:10,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:10,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-13 01:19:10,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-03-13 01:19:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:10,198 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:10,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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) [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:10,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:10,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:10,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:10,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-13 01:19:10,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:10,967 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:10,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1285761393, now seen corresponding path program 7 times [2021-03-13 01:19:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:10,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701709108] [2021-03-13 01:19:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701709108] [2021-03-13 01:19:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432157181] [2021-03-13 01:19:11,024 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 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 [2021-03-13 01:19:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:11,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-13 01:19:11,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:11,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:11,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-03-13 01:19:11,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389354595] [2021-03-13 01:19:11,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-13 01:19:11,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:11,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-13 01:19:11,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-03-13 01:19:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:11,110 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:11,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 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) [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-03-13 01:19:11,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-13 01:19:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-13 01:19:11,413 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1457827210, now seen corresponding path program 8 times [2021-03-13 01:19:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:11,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783336059] [2021-03-13 01:19:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:11,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783336059] [2021-03-13 01:19:11,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711906835] [2021-03-13 01:19:11,467 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 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 [2021-03-13 01:19:11,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-13 01:19:11,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:11,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-13 01:19:11,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:11,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 01:19:11,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-03-13 01:19:11,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609482531] [2021-03-13 01:19:11,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-13 01:19:11,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 01:19:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-13 01:19:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-03-13 01:19:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:11,560 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 01:19:11,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 01:19:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-13 01:19:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-13 01:19:11,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-13 01:19:11,908 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 01:19:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 01:19:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1324292999, now seen corresponding path program 9 times [2021-03-13 01:19:11,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 01:19:11,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793923480] [2021-03-13 01:19:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 01:19:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 01:19:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 01:19:12,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793923480] [2021-03-13 01:19:12,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969911886] [2021-03-13 01:19:12,095 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 01:19:12,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-13 01:19:12,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 01:19:12,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 55 conjunts are in the unsatisfiable core [2021-03-13 01:19:12,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 01:19:12,412 INFO L354 Elim1Store]: treesize reduction 20, result has 85.0 percent of original size [2021-03-13 01:19:12,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 35 treesize of output 127 [2021-03-13 01:20:38,499 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 1967 DAG size of output: 1879 [2021-03-13 01:20:38,734 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 1638 DAG size of output: 1571 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown