/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:33:45,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:33:45,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:33:45,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:33:45,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:33:45,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:33:45,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:33:45,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:33:45,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:33:45,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:33:46,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:33:46,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:33:46,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:33:46,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:33:46,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:33:46,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:33:46,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:33:46,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:33:46,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:33:46,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:33:46,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:33:46,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:33:46,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:33:46,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:33:46,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 02:33:46,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 02:33:46,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 02:33:46,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 02:33:46,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 02:33:46,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 02:33:46,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 02:33:46,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 02:33:46,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 02:33:46,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:33:46,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:33:46,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:33:46,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:33:46,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:33:46,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:33:46,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:33:46,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:33:46,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:33:46,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:33:46,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:33:46,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:33:46,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:33:46,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:33:46,075 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:33:46,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:33:46,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:33:46,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:33:46,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:33:46,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:33:46,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:33:46,077 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 02:33:46,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:33:46,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:33:46,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:33:46,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:33:46,374 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:33:46,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-11 02:33:46,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a023985a/4781315a9e834e8aa2b75b9c88bb6c9d/FLAG07e2b9083 [2020-07-11 02:33:46,882 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:33:46,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-11 02:33:46,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a023985a/4781315a9e834e8aa2b75b9c88bb6c9d/FLAG07e2b9083 [2020-07-11 02:33:47,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a023985a/4781315a9e834e8aa2b75b9c88bb6c9d [2020-07-11 02:33:47,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:33:47,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:33:47,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:33:47,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:33:47,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:33:47,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ec8e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47, skipping insertion in model container [2020-07-11 02:33:47,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:33:47,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:33:47,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:33:47,487 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:33:47,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:33:47,520 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:33:47,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47 WrapperNode [2020-07-11 02:33:47,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:33:47,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:33:47,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:33:47,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:33:47,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (1/1) ... [2020-07-11 02:33:47,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:33:47,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:33:47,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:33:47,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:33:47,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (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 [2020-07-11 02:33:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:33:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:33:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-11 02:33:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:33:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:33:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:33:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-11 02:33:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-11 02:33:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-11 02:33:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:33:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:33:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:33:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:33:48,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:33:48,034 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 02:33:48,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:33:48 BoogieIcfgContainer [2020-07-11 02:33:48,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:33:48,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:33:48,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:33:48,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:33:48,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:33:47" (1/3) ... [2020-07-11 02:33:48,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dbd3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:33:48, skipping insertion in model container [2020-07-11 02:33:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:33:47" (2/3) ... [2020-07-11 02:33:48,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dbd3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:33:48, skipping insertion in model container [2020-07-11 02:33:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:33:48" (3/3) ... [2020-07-11 02:33:48,046 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-07-11 02:33:48,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:33:48,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:33:48,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:33:48,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:33:48,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:33:48,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:33:48,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:33:48,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:33:48,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:33:48,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:33:48,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:33:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-11 02:33:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-11 02:33:48,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:33:48,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:33:48,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:33:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:33:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash 713645626, now seen corresponding path program 1 times [2020-07-11 02:33:48,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:33:48,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254369046] [2020-07-11 02:33:48,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:33:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:33:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:33:48,298 INFO L280 TraceCheckUtils]: 0: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-11 02:33:48,299 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {43#true} {43#true} #67#return; {43#true} is VALID [2020-07-11 02:33:48,301 INFO L263 TraceCheckUtils]: 0: Hoare triple {43#true} call ULTIMATE.init(); {43#true} is VALID [2020-07-11 02:33:48,301 INFO L280 TraceCheckUtils]: 1: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-11 02:33:48,302 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {43#true} {43#true} #67#return; {43#true} is VALID [2020-07-11 02:33:48,302 INFO L263 TraceCheckUtils]: 3: Hoare triple {43#true} call #t~ret3 := main(); {43#true} is VALID [2020-07-11 02:33:48,302 INFO L280 TraceCheckUtils]: 4: Hoare triple {43#true} havoc ~z~0; {43#true} is VALID [2020-07-11 02:33:48,303 INFO L280 TraceCheckUtils]: 5: Hoare triple {43#true} havoc ~a~0; {43#true} is VALID [2020-07-11 02:33:48,303 INFO L280 TraceCheckUtils]: 6: Hoare triple {43#true} havoc ~k~0; {43#true} is VALID [2020-07-11 02:33:48,303 INFO L280 TraceCheckUtils]: 7: Hoare triple {43#true} havoc ~x~0; {43#true} is VALID [2020-07-11 02:33:48,304 INFO L280 TraceCheckUtils]: 8: Hoare triple {43#true} havoc ~y~0; {43#true} is VALID [2020-07-11 02:33:48,304 INFO L280 TraceCheckUtils]: 9: Hoare triple {43#true} havoc ~c~0; {43#true} is VALID [2020-07-11 02:33:48,305 INFO L280 TraceCheckUtils]: 10: Hoare triple {43#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {43#true} is VALID [2020-07-11 02:33:48,305 INFO L280 TraceCheckUtils]: 11: Hoare triple {43#true} ~z~0 := #t~nondet0; {43#true} is VALID [2020-07-11 02:33:48,305 INFO L280 TraceCheckUtils]: 12: Hoare triple {43#true} havoc #t~nondet0; {43#true} is VALID [2020-07-11 02:33:48,306 INFO L280 TraceCheckUtils]: 13: Hoare triple {43#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {43#true} is VALID [2020-07-11 02:33:48,306 INFO L280 TraceCheckUtils]: 14: Hoare triple {43#true} ~a~0 := #t~nondet1; {43#true} is VALID [2020-07-11 02:33:48,306 INFO L280 TraceCheckUtils]: 15: Hoare triple {43#true} havoc #t~nondet1; {43#true} is VALID [2020-07-11 02:33:48,307 INFO L280 TraceCheckUtils]: 16: Hoare triple {43#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {43#true} is VALID [2020-07-11 02:33:48,307 INFO L280 TraceCheckUtils]: 17: Hoare triple {43#true} ~k~0 := #t~nondet2; {43#true} is VALID [2020-07-11 02:33:48,307 INFO L280 TraceCheckUtils]: 18: Hoare triple {43#true} havoc #t~nondet2; {43#true} is VALID [2020-07-11 02:33:48,308 INFO L280 TraceCheckUtils]: 19: Hoare triple {43#true} ~x~0 := ~a~0; {43#true} is VALID [2020-07-11 02:33:48,308 INFO L280 TraceCheckUtils]: 20: Hoare triple {43#true} ~y~0 := 1; {43#true} is VALID [2020-07-11 02:33:48,309 INFO L280 TraceCheckUtils]: 21: Hoare triple {43#true} ~c~0 := 1; {43#true} is VALID [2020-07-11 02:33:48,315 INFO L280 TraceCheckUtils]: 22: Hoare triple {43#true} assume !true; {44#false} is VALID [2020-07-11 02:33:48,315 INFO L263 TraceCheckUtils]: 23: Hoare triple {44#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~a~0 * ~z~0 * ~y~0 then 1 else 0)); {44#false} is VALID [2020-07-11 02:33:48,315 INFO L280 TraceCheckUtils]: 24: Hoare triple {44#false} ~cond := #in~cond; {44#false} is VALID [2020-07-11 02:33:48,316 INFO L280 TraceCheckUtils]: 25: Hoare triple {44#false} assume 0 == ~cond; {44#false} is VALID [2020-07-11 02:33:48,316 INFO L280 TraceCheckUtils]: 26: Hoare triple {44#false} assume !false; {44#false} is VALID [2020-07-11 02:33:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:33:48,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254369046] [2020-07-11 02:33:48,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:33:48,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-11 02:33:48,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044870345] [2020-07-11 02:33:48,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-11 02:33:48,335 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:33:48,339 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-11 02:33:48,402 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:48,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-11 02:33:48,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:33:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-11 02:33:48,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:33:48,415 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-11 02:33:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:48,550 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-07-11 02:33:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-11 02:33:48,550 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-11 02:33:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:33:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:33:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2020-07-11 02:33:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:33:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2020-07-11 02:33:48,569 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 68 transitions. [2020-07-11 02:33:48,679 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:48,691 INFO L225 Difference]: With dead ends: 58 [2020-07-11 02:33:48,692 INFO L226 Difference]: Without dead ends: 35 [2020-07-11 02:33:48,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:33:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-11 02:33:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-11 02:33:48,754 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:33:48,754 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand 35 states. [2020-07-11 02:33:48,755 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2020-07-11 02:33:48,755 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2020-07-11 02:33:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:48,762 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-07-11 02:33:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-11 02:33:48,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:33:48,763 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:33:48,763 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2020-07-11 02:33:48,764 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2020-07-11 02:33:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:33:48,769 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-07-11 02:33:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-11 02:33:48,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:33:48,770 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:33:48,770 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:33:48,771 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:33:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-11 02:33:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-11 02:33:48,775 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2020-07-11 02:33:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:33:48,776 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-11 02:33:48,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-11 02:33:48,777 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 35 states and 36 transitions. [2020-07-11 02:33:48,832 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:33:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-11 02:33:48,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-11 02:33:48,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:33:48,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:33:48,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:33:48,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:33:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:33:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash 703427313, now seen corresponding path program 1 times [2020-07-11 02:33:48,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:33:48,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445904253] [2020-07-11 02:33:48,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:33:48,849 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-11 02:33:48,849 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-11 02:33:48,849 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 02:33:48,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:33:48,868 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 02:33:48,868 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:33:48,868 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:33:48,869 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-11 02:33:48,870 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 02:33:48,871 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-11 02:33:48,871 WARN L170 areAnnotationChecker]: L10-3 has no Hoare annotation [2020-07-11 02:33:48,871 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-11 02:33:48,871 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-11 02:33:48,871 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-11 02:33:48,872 WARN L170 areAnnotationChecker]: L31-1 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L31-1 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-11 02:33:48,873 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-11 02:33:48,874 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 02:33:48,874 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-11 02:33:48,874 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-11 02:33:48,874 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 02:33:48,874 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-11 02:33:48,875 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-11 02:33:48,875 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-11 02:33:48,875 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-11 02:33:48,885 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-11 02:33:48,885 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-11 02:33:48,885 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-11 02:33:48,885 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-11 02:33:48,885 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-11 02:33:48,886 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-11 02:33:48,887 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-11 02:33:48,887 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. [2020-07-11 02:33:48,890 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-11 02:33:48,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 02:33:48 BoogieIcfgContainer [2020-07-11 02:33:48,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 02:33:48,894 INFO L168 Benchmark]: Toolchain (without parser) took 1610.79 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 103.4 MB in the beginning and 205.0 MB in the end (delta: -101.6 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,896 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.54 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,898 INFO L168 Benchmark]: Boogie Preprocessor took 118.59 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.1 MB in the beginning and 182.7 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,899 INFO L168 Benchmark]: RCFGBuilder took 397.98 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 163.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,900 INFO L168 Benchmark]: TraceAbstraction took 851.97 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 162.6 MB in the beginning and 205.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-07-11 02:33:48,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.54 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.59 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.1 MB in the beginning and 182.7 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.98 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 163.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 851.97 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 162.6 MB in the beginning and 205.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int z, a, k; [L21] int x, y, c; [L22] z = __VERIFIER_nondet_int() [L23] a = __VERIFIER_nondet_int() [L24] k = __VERIFIER_nondet_int() [L26] x = a [L27] y = 1 [L28] c = 1 [L30] COND TRUE 1 [L31] CALL __VERIFIER_assert(z*x - x + a - a*z*y == 0) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...