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 0.1.23-2eb0a67 [2018-10-03 10:17:16,806 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 10:17:16,808 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 10:17:16,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 10:17:16,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 10:17:16,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 10:17:16,825 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 10:17:16,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 10:17:16,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 10:17:16,830 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 10:17:16,831 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 10:17:16,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 10:17:16,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 10:17:16,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 10:17:16,838 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 10:17:16,839 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 10:17:16,843 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 10:17:16,847 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 10:17:16,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 10:17:16,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 10:17:16,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 10:17:16,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 10:17:16,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-03 10:17:16,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-03 10:17:16,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-03 10:17:16,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-03 10:17:16,857 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-03 10:17:16,857 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-03 10:17:16,858 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-03 10:17:16,859 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-03 10:17:16,859 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-03 10:17:16,860 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-03 10:17:16,860 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-03 10:17:16,860 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-03 10:17:16,861 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-03 10:17:16,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-03 10:17:16,862 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 [2018-10-03 10:17:16,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 10:17:16,877 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 10:17:16,878 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 10:17:16,878 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 10:17:16,879 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 10:17:16,879 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 10:17:16,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 10:17:16,880 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 10:17:16,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 10:17:16,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 10:17:16,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 10:17:16,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 10:17:16,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 10:17:16,881 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 10:17:16,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 10:17:16,881 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 10:17:16,881 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 10:17:16,882 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-03 10:17:16,882 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-03 10:17:16,882 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 10:17:16,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 10:17:16,882 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 10:17:16,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-03 10:17:16,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 10:17:16,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 10:17:16,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 10:17:16,883 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-03 10:17:16,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 10:17:16,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 10:17:16,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 10:17:16,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 10:17:16,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 10:17:16,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 10:17:16,965 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 10:17:16,966 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 10:17:16,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-10-03 10:17:16,967 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-10-03 10:17:17,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 10:17:17,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 10:17:17,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 10:17:17,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 10:17:17,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 10:17:17,055 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 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,068 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 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 10:17:17,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 10:17:17,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 10:17:17,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 10:17:17,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 10:17:17,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 10:17:17,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 10:17:17,100 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 10:17:17,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 10:17:17" (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 [2018-10-03 10:17:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 10:17:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 10:17:17,494 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 10:17:17,495 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 10:17:17 BoogieIcfgContainer [2018-10-03 10:17:17,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 10:17:17,496 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-03 10:17:17,496 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-03 10:17:17,507 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-03 10:17:17,508 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 10:17:17" (1/1) ... [2018-10-03 10:17:17,521 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 10:17:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 7 states and 9 transitions. [2018-10-03 10:17:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2018-10-03 10:17:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 10:17:17,558 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2018-10-03 10:17:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-03 10:17:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 10:17:17,986 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2018-10-03 10:17:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2018-10-03 10:17:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 10:17:18,838 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 15 states and 22 transitions. [2018-10-03 10:17:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2018-10-03 10:17:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 10:17:19,822 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 17 states and 26 transitions. [2018-10-03 10:17:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2018-10-03 10:17:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 10:17:20,219 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 30 transitions. [2018-10-03 10:17:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2018-10-03 10:17:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 10:17:20,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 21 states and 34 transitions. [2018-10-03 10:17:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2018-10-03 10:17:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 10:17:21,283 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 23 states and 38 transitions. [2018-10-03 10:17:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2018-10-03 10:17:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 10:17:21,979 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 25 states and 42 transitions. [2018-10-03 10:17:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 42 transitions. [2018-10-03 10:17:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 10:17:22,807 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 27 states and 46 transitions. [2018-10-03 10:17:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2018-10-03 10:17:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 10:17:23,517 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 29 states and 50 transitions. [2018-10-03 10:17:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 50 transitions. [2018-10-03 10:17:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 10:17:24,006 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 10:17:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 31 states and 53 transitions. [2018-10-03 10:17:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2018-10-03 10:17:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 10:17:24,543 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-03 10:17:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 55 states and 88 transitions. [2018-10-03 10:17:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 88 transitions. [2018-10-03 10:17:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 10:17:27,298 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-03 10:17:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2018-10-03 10:17:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2018-10-03 10:17:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 10:17:29,771 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-10-03 10:17:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 77 states and 101 transitions. [2018-10-03 10:17:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2018-10-03 10:17:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 10:17:35,243 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2018-10-03 10:17:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 77 states and 91 transitions. [2018-10-03 10:17:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2018-10-03 10:17:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 10:17:39,227 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-10-03 10:17:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 101 states and 126 transitions. [2018-10-03 10:17:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2018-10-03 10:17:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 10:17:43,866 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2018-10-03 10:17:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 101 states and 116 transitions. [2018-10-03 10:17:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2018-10-03 10:17:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 10:17:48,853 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-03 10:17:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:17:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 125 states and 151 transitions. [2018-10-03 10:17:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2018-10-03 10:17:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 10:17:54,447 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:17:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:17:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-10-03 10:18:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 125 states and 141 transitions. [2018-10-03 10:18:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2018-10-03 10:18:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-03 10:18:01,084 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-03 10:18:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 149 states and 176 transitions. [2018-10-03 10:18:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2018-10-03 10:18:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 10:18:07,647 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 3000 trivial. 0 not checked. [2018-10-03 10:18:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 149 states and 166 transitions. [2018-10-03 10:18:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2018-10-03 10:18:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 10:18:15,738 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-03 10:18:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 173 states and 201 transitions. [2018-10-03 10:18:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 201 transitions. [2018-10-03 10:18:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-03 10:18:24,042 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4478 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 4332 trivial. 0 not checked. [2018-10-03 10:18:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 173 states and 191 transitions. [2018-10-03 10:18:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2018-10-03 10:18:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 10:18:33,385 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-03 10:18:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 197 states and 226 transitions. [2018-10-03 10:18:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 226 transitions. [2018-10-03 10:18:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-03 10:18:44,397 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 16 proven. 154 refuted. 0 times theorem prover too weak. 5908 trivial. 0 not checked. [2018-10-03 10:18:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:18:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 197 states and 216 transitions. [2018-10-03 10:18:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 216 transitions. [2018-10-03 10:18:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-03 10:18:55,471 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:18:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:18:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-03 10:19:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:19:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 221 states and 251 transitions. [2018-10-03 10:19:07,404 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2018-10-03 10:19:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-03 10:19:07,406 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:19:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:19:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 18 proven. 176 refuted. 0 times theorem prover too weak. 7728 trivial. 0 not checked. [2018-10-03 10:19:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:19:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 221 states and 241 transitions. [2018-10-03 10:19:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 241 transitions. [2018-10-03 10:19:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-03 10:19:20,060 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:19:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:19:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-03 10:19:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:19:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 245 states and 265 transitions. [2018-10-03 10:19:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2018-10-03 10:19:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-03 10:19:33,674 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:19:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:19:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 20 proven. 198 refuted. 0 times theorem prover too weak. 9792 trivial. 0 not checked. [2018-10-03 10:19:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-03 10:19:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 245 states and 255 transitions. [2018-10-03 10:19:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-10-03 10:19:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-03 10:19:51,986 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2018-10-03 10:19:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 10:20:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 12082 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown