java -ea -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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 16:37:12,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 16:37:12,009 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 16:37:12,024 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 16:37:12,024 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 16:37:12,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 16:37:12,029 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 16:37:12,032 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 16:37:12,035 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 16:37:12,036 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 16:37:12,038 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 16:37:12,038 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 16:37:12,039 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 16:37:12,041 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 16:37:12,042 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 16:37:12,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 16:37:12,052 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 16:37:12,053 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 16:37:12,056 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 16:37:12,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 16:37:12,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 16:37:12,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 16:37:12,067 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-14 16:37:12,067 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-14 16:37:12,068 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-14 16:37:12,070 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-14 16:37:12,071 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-14 16:37:12,073 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-14 16:37:12,074 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-14 16:37:12,078 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-14 16:37:12,078 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-14 16:37:12,079 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-14 16:37:12,079 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-14 16:37:12,079 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-14 16:37:12,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-14 16:37:12,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-14 16:37:12,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-14 16:37:12,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 16:37:12,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 16:37:12,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 16:37:12,114 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 16:37:12,115 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 16:37:12,115 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 16:37:12,116 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 16:37:12,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 16:37:12,116 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 16:37:12,116 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 16:37:12,117 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 16:37:12,117 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 16:37:12,117 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 16:37:12,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 16:37:12,117 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 16:37:12,118 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 16:37:12,118 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 16:37:12,118 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 16:37:12,118 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 16:37:12,119 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 16:37:12,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 16:37:12,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 16:37:12,119 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 16:37:12,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:37:12,120 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 16:37:12,120 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 16:37:12,120 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 16:37:12,120 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 16:37:12,120 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 16:37:12,121 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 16:37:12,121 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 16:37:12,121 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 16:37:12,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 16:37:12,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 16:37:12,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 16:37:12,207 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 16:37:12,208 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 16:37:12,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-14 16:37:12,290 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13803238/583d212ac3224442bdb1f43ce61bd12d/FLAG89e915e66 [2018-11-14 16:37:12,765 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 16:37:12,766 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-14 16:37:12,773 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13803238/583d212ac3224442bdb1f43ce61bd12d/FLAG89e915e66 [2018-11-14 16:37:12,795 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13803238/583d212ac3224442bdb1f43ce61bd12d [2018-11-14 16:37:12,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 16:37:12,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 16:37:12,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:12,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 16:37:12,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 16:37:12,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:12" (1/1) ... [2018-11-14 16:37:12,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49326289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:12, skipping insertion in model container [2018-11-14 16:37:12,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:12" (1/1) ... [2018-11-14 16:37:12,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 16:37:12,861 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 16:37:13,052 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:13,057 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 16:37:13,075 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:13,090 INFO L195 MainTranslator]: Completed translation [2018-11-14 16:37:13,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13 WrapperNode [2018-11-14 16:37:13,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:13,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 16:37:13,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 16:37:13,092 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 16:37:13,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... [2018-11-14 16:37:13,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 16:37:13,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 16:37:13,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 16:37:13,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 16:37:13,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:37:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 16:37:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 16:37:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-14 16:37:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 16:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 16:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 16:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-14 16:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-14 16:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 16:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 16:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 16:37:13,774 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 16:37:13,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:13 BoogieIcfgContainer [2018-11-14 16:37:13,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 16:37:13,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 16:37:13,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 16:37:13,780 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 16:37:13,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:37:12" (1/3) ... [2018-11-14 16:37:13,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38945409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:13, skipping insertion in model container [2018-11-14 16:37:13,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:13" (2/3) ... [2018-11-14 16:37:13,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38945409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:13, skipping insertion in model container [2018-11-14 16:37:13,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:13" (3/3) ... [2018-11-14 16:37:13,784 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-11-14 16:37:13,795 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 16:37:13,804 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 16:37:13,822 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 16:37:13,855 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 16:37:13,855 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 16:37:13,856 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 16:37:13,856 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 16:37:13,856 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 16:37:13,856 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 16:37:13,856 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 16:37:13,856 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 16:37:13,857 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 16:37:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-14 16:37:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-14 16:37:13,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:13,887 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:13,890 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:13,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-14 16:37:13,900 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:13,901 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-14 16:37:13,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:13,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:37:14,029 INFO L256 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2018-11-14 16:37:14,033 INFO L273 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2018-11-14 16:37:14,034 INFO L268 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #39#return; {23#true} is VALID [2018-11-14 16:37:14,034 INFO L256 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret7 := main(); {23#true} is VALID [2018-11-14 16:37:14,035 INFO L273 TraceCheckUtils]: 4: Hoare triple {23#true} ~x~0 := #t~nondet0;havoc #t~nondet0;~y~0 := #t~nondet1;havoc #t~nondet1;~z~0 := #t~nondet2;havoc #t~nondet2; {23#true} is VALID [2018-11-14 16:37:14,042 INFO L273 TraceCheckUtils]: 5: Hoare triple {23#true} assume !true; {24#false} is VALID [2018-11-14 16:37:14,043 INFO L256 TraceCheckUtils]: 6: Hoare triple {24#false} call __VERIFIER_assert(0bv32); {24#false} is VALID [2018-11-14 16:37:14,043 INFO L273 TraceCheckUtils]: 7: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2018-11-14 16:37:14,043 INFO L273 TraceCheckUtils]: 8: Hoare triple {24#false} assume ~cond == 0bv32; {24#false} is VALID [2018-11-14 16:37:14,044 INFO L273 TraceCheckUtils]: 9: Hoare triple {24#false} assume !false; {24#false} is VALID [2018-11-14 16:37:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:37:14,047 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 16:37:14,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 16:37:14,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-14 16:37:14,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 16:37:14,059 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:37:14,063 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-14 16:37:14,105 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:37:14,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-14 16:37:14,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-14 16:37:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 16:37:14,116 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-14 16:37:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:14,225 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-14 16:37:14,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-14 16:37:14,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 16:37:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:37:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2018-11-14 16:37:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2018-11-14 16:37:14,242 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 36 transitions. [2018-11-14 16:37:14,576 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:37:14,587 INFO L225 Difference]: With dead ends: 32 [2018-11-14 16:37:14,587 INFO L226 Difference]: Without dead ends: 13 [2018-11-14 16:37:14,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 16:37:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-14 16:37:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-14 16:37:14,647 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:37:14,647 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2018-11-14 16:37:14,648 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2018-11-14 16:37:14,648 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2018-11-14 16:37:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:14,651 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-14 16:37:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-14 16:37:14,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:14,654 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:14,654 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2018-11-14 16:37:14,655 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2018-11-14 16:37:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:14,658 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-14 16:37:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-14 16:37:14,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:14,658 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:14,659 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:37:14,659 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:37:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-14 16:37:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-14 16:37:14,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-14 16:37:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:37:14,663 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-14 16:37:14,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-14 16:37:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-14 16:37:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-14 16:37:14,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:14,664 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:14,664 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:14,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-11-14 16:37:14,665 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:14,665 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-14 16:37:14,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 16:37:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (3)] Exception during sending of exit command (exit): Broken pipe [2018-11-14 16:37:14,752 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-14 16:37:14,791 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 16:37:14,792 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:14,794 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:14,794 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2018-11-14 16:37:14,794 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2018-11-14 16:37:14,794 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2018-11-14 16:37:14,795 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2018-11-14 16:37:14,796 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2018-11-14 16:37:14,797 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 16:37:14,798 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 16:37:14,799 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 16:37:14,799 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2018-11-14 16:37:14,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:37:14 BoogieIcfgContainer [2018-11-14 16:37:14,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 16:37:14,804 INFO L168 Benchmark]: Toolchain (without parser) took 1995.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -706.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:14,806 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 16:37:14,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:14,809 INFO L168 Benchmark]: Boogie Preprocessor took 36.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 16:37:14,810 INFO L168 Benchmark]: RCFGBuilder took 647.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:14,811 INFO L168 Benchmark]: TraceAbstraction took 1025.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:14,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 647.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1025.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100