java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/KojakBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Kojak_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 11:40:09,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 11:40:09,158 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 11:40:09,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 11:40:09,175 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 11:40:09,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 11:40:09,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 11:40:09,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 11:40:09,185 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 11:40:09,186 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 11:40:09,187 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-28 11:40:09,188 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-28 11:40:09,188 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-28 11:40:09,189 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-28 11:40:09,191 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-28 11:40:09,191 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-28 11:40:09,192 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-28 11:40:09,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-28 11:40:09,196 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-28 11:40:09,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-28 11:40:09,199 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-28 11:40:09,200 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-28 11:40:09,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-28 11:40:09,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-28 11:40:09,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-28 11:40:09,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-28 11:40:09,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-28 11:40:09,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-28 11:40:09,207 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-28 11:40:09,208 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-28 11:40:09,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-28 11:40:09,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-28 11:40:09,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-28 11:40:09,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-28 11:40:09,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-28 11:40:09,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-28 11:40:09,219 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Kojak_Default_PUPT.epf [2018-09-28 11:40:09,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 11:40:09,252 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 11:40:09,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 11:40:09,253 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 11:40:09,256 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 11:40:09,256 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 11:40:09,256 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 11:40:09,257 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 11:40:09,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 11:40:09,257 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 11:40:09,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 11:40:09,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 11:40:09,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 11:40:09,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 11:40:09,258 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 11:40:09,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 11:40:09,259 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 11:40:09,259 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-09-28 11:40:09,259 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-09-28 11:40:09,259 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 11:40:09,259 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 11:40:09,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 11:40:09,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-09-28 11:40:09,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 11:40:09,260 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 11:40:09,260 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 11:40:09,261 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-09-28 11:40:09,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 11:40:09,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 11:40:09,261 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 11:40:09,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 11:40:09,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 11:40:09,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 11:40:09,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 11:40:09,349 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 11:40:09,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-09-28 11:40:09,350 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-09-28 11:40:09,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 11:40:09,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 11:40:09,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 11:40:09,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 11:40:09,412 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 11:40:09,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 11:40:09,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 11:40:09,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 11:40:09,453 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 11:40:09,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 11:40:09,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 11:40:09,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 11:40:09,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 11:40:09,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 11:40:09" (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:10000 (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:10000 [2018-09-28 11:40:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-28 11:40:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-28 11:40:09,730 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-28 11:40:09,731 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 11:40:09 BoogieIcfgContainer [2018-09-28 11:40:09,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 11:40:09,732 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-09-28 11:40:09,732 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-09-28 11:40:09,741 INFO L276 PluginConnector]: CodeCheck initialized [2018-09-28 11:40:09,741 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 11:40:09" (1/1) ... [2018-09-28 11:40:09,755 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 11:40:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 7 states and 9 transitions. [2018-09-28 11:40:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2018-09-28 11:40:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-28 11:40:09,795 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2018-09-28 11:40:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-28 11:40:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 11:40:10,281 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2018-09-28 11:40:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2018-09-28 11:40:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 11:40:11,309 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 15 states and 22 transitions. [2018-09-28 11:40:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2018-09-28 11:40:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-28 11:40:12,287 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 17 states and 26 transitions. [2018-09-28 11:40:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2018-09-28 11:40:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-28 11:40:12,746 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 30 transitions. [2018-09-28 11:40:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2018-09-28 11:40:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 11:40:13,492 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 21 states and 34 transitions. [2018-09-28 11:40:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2018-09-28 11:40:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 11:40:14,094 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 23 states and 38 transitions. [2018-09-28 11:40:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2018-09-28 11:40:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 11:40:15,067 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 25 states and 42 transitions. [2018-09-28 11:40:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 42 transitions. [2018-09-28 11:40:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-28 11:40:15,653 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 27 states and 46 transitions. [2018-09-28 11:40:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2018-09-28 11:40:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-28 11:40:16,711 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 29 states and 50 transitions. [2018-09-28 11:40:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 50 transitions. [2018-09-28 11:40:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-28 11:40:17,609 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 11:40:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 31 states and 53 transitions. [2018-09-28 11:40:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2018-09-28 11:40:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-28 11:40:18,581 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-28 11:40:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 55 states and 88 transitions. [2018-09-28 11:40:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 88 transitions. [2018-09-28 11:40:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-28 11:40:22,678 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-28 11:40:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2018-09-28 11:40:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2018-09-28 11:40:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-28 11:40:27,702 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-09-28 11:40:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 77 states and 101 transitions. [2018-09-28 11:40:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2018-09-28 11:40:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-28 11:40:36,706 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2018-09-28 11:40:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:40:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 77 states and 91 transitions. [2018-09-28 11:40:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2018-09-28 11:40:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-28 11:40:51,932 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:40:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:40:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-28 11:41:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:41:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 101 states and 126 transitions. [2018-09-28 11:41:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2018-09-28 11:41:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-28 11:41:19,872 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:41:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:41:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2018-09-28 11:42:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:42:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 101 states and 116 transitions. [2018-09-28 11:42:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2018-09-28 11:42:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-28 11:42:07,728 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:42:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:42:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-09-28 11:43:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-28 11:43:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 125 states and 151 transitions. [2018-09-28 11:43:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2018-09-28 11:43:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-28 11:43:27,256 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-28 11:43:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 11:43:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown