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/20170319-ConjunctivePathPrograms/nested.i_4.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 22:47:52,400 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 22:47:52,403 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 22:47:52,419 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 22:47:52,420 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 22:47:52,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 22:47:52,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 22:47:52,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 22:47:52,425 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 22:47:52,426 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 22:47:52,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 22:47:52,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 22:47:52,429 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 22:47:52,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 22:47:52,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 22:47:52,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 22:47:52,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 22:47:52,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 22:47:52,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 22:47:52,438 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 22:47:52,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 22:47:52,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 22:47:52,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 22:47:52,443 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 22:47:52,443 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 22:47:52,444 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 22:47:52,445 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 22:47:52,446 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 22:47:52,447 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 22:47:52,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 22:47:52,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 22:47:52,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 22:47:52,449 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 22:47:52,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 22:47:52,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 22:47:52,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 22:47:52,452 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 [2018-09-26 22:47:52,469 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 22:47:52,469 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 22:47:52,470 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 22:47:52,470 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 22:47:52,471 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 22:47:52,471 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 22:47:52,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 22:47:52,472 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 22:47:52,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 22:47:52,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 22:47:52,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 22:47:52,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 22:47:52,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 22:47:52,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 22:47:52,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 22:47:52,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 22:47:52,474 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 22:47:52,474 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-09-26 22:47:52,474 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-09-26 22:47:52,474 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 22:47:52,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 22:47:52,475 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 22:47:52,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-09-26 22:47:52,475 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 22:47:52,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 22:47:52,476 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 22:47:52,476 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-09-26 22:47:52,476 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 22:47:52,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 22:47:52,476 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 22:47:52,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 22:47:52,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 22:47:52,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 22:47:52,570 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 22:47:52,571 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 22:47:52,572 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested.i_4.bplTransformedIcfg_BEv2_3.bpl [2018-09-26 22:47:52,573 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested.i_4.bplTransformedIcfg_BEv2_3.bpl' [2018-09-26 22:47:52,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 22:47:52,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 22:47:52,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 22:47:52,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 22:47:52,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 22:47:52,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 22:47:52,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 22:47:52,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 22:47:52,709 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 22:47:52,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (1/1) ... [2018-09-26 22:47:52,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 22:47:52,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 22:47:52,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 22:47:52,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 22:47:52,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 10:47:52" (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 [2018-09-26 22:47:52,823 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-26 22:47:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 22:47:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 22:47:53,063 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 22:47:53,064 INFO L202 PluginConnector]: Adding new model nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 10:47:53 BoogieIcfgContainer [2018-09-26 22:47:53,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 22:47:53,065 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-09-26 22:47:53,065 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-09-26 22:47:53,078 INFO L276 PluginConnector]: CodeCheck initialized [2018-09-26 22:47:53,078 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "nested.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 10:47:53" (1/1) ... [2018-09-26 22:47:53,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:47:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 5 states and 7 transitions. [2018-09-26 22:47:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 7 transitions. [2018-09-26 22:47:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 22:47:53,142 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:47:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 6 states and 8 transitions. [2018-09-26 22:47:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 8 transitions. [2018-09-26 22:47:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 22:47:53,632 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:47:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 8 states and 13 transitions. [2018-09-26 22:47:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 13 transitions. [2018-09-26 22:47:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 22:47:55,081 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:47:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 9 states and 16 transitions. [2018-09-26 22:47:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 16 transitions. [2018-09-26 22:47:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 22:47:56,427 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:47:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 10 states and 19 transitions. [2018-09-26 22:47:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 19 transitions. [2018-09-26 22:47:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 22:47:57,426 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:47:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:47:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 11 states and 22 transitions. [2018-09-26 22:47:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 22 transitions. [2018-09-26 22:47:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-26 22:47:59,419 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:47:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:47:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 12 states and 25 transitions. [2018-09-26 22:48:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 25 transitions. [2018-09-26 22:48:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 22:48:00,148 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 13 states and 28 transitions. [2018-09-26 22:48:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 28 transitions. [2018-09-26 22:48:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-26 22:48:00,860 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 14 states and 31 transitions. [2018-09-26 22:48:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 31 transitions. [2018-09-26 22:48:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 22:48:01,902 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 15 states and 34 transitions. [2018-09-26 22:48:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 34 transitions. [2018-09-26 22:48:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-26 22:48:02,724 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 16 states and 37 transitions. [2018-09-26 22:48:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 37 transitions. [2018-09-26 22:48:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 22:48:03,855 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:48:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 17 states and 39 transitions. [2018-09-26 22:48:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 39 transitions. [2018-09-26 22:48:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-26 22:48:04,521 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-26 22:48:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 29 states and 62 transitions. [2018-09-26 22:48:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 62 transitions. [2018-09-26 22:48:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-26 22:48:11,562 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-26 22:48:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 41 transitions. [2018-09-26 22:48:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2018-09-26 22:48:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-26 22:48:22,300 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-26 22:48:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:48:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 40 states and 64 transitions. [2018-09-26 22:48:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2018-09-26 22:48:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-26 22:48:42,523 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:48:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:48:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-09-26 22:49:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:49:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 40 states and 54 transitions. [2018-09-26 22:49:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2018-09-26 22:49:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-26 22:49:16,518 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:49:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:49:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-09-26 22:50:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:50:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 52 states and 77 transitions. [2018-09-26 22:50:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2018-09-26 22:50:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-26 22:50:15,575 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:50:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:50:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-09-26 22:51:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-09-26 22:51:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 52 states and 67 transitions. [2018-09-26 22:51:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2018-09-26 22:51:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-26 22:51:50,059 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-09-26 22:51:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:51:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown