/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/loops/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:34:36,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:34:36,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:34:36,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:34:36,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:34:36,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:34:36,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:34:36,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:34:36,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:34:36,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:34:36,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:34:36,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:34:36,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:34:36,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:34:36,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:34:36,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:34:36,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:34:36,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:34:36,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:34:36,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:34:36,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:34:36,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:34:36,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:34:36,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:34:36,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:34:36,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:34:36,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:34:36,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:34:36,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:34:36,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:34:36,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:34:36,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:34:36,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:34:36,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:34:36,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:34:36,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:34:36,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:34:36,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:34:36,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:34:36,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:34:36,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:34:36,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:34:36,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:34:36,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:34:36,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:34:36,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:34:36,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:34:36,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:34:36,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:34:36,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:34:36,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:34:36,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:34:36,132 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:34:36,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:34:36,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:34:36,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:34:36,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:34:36,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:34:36,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:34:36,135 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 [2020-07-18 06:34:36,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:34:36,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:34:36,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:34:36,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:34:36,431 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:34:36,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2020-07-18 06:34:36,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3839d05d/e34ceb66072e44fa8d45e1cc254d6faf/FLAG5bcb37d02 [2020-07-18 06:34:36,927 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:34:36,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2020-07-18 06:34:36,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3839d05d/e34ceb66072e44fa8d45e1cc254d6faf/FLAG5bcb37d02 [2020-07-18 06:34:37,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3839d05d/e34ceb66072e44fa8d45e1cc254d6faf [2020-07-18 06:34:37,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:34:37,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:34:37,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:37,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:34:37,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:34:37,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f24f45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37, skipping insertion in model container [2020-07-18 06:34:37,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:34:37,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:34:37,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:37,611 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:34:37,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:37,654 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:34:37,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37 WrapperNode [2020-07-18 06:34:37,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:37,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:34:37,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:34:37,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:34:37,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (1/1) ... [2020-07-18 06:34:37,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:34:37,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:34:37,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:34:37,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:34:37,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (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 [2020-07-18 06:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 06:34:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:34:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-18 06:34:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 06:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 06:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-18 06:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 06:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-18 06:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:34:38,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:34:38,254 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 06:34:38,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:38 BoogieIcfgContainer [2020-07-18 06:34:38,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:34:38,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:34:38,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:34:38,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:34:38,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:34:37" (1/3) ... [2020-07-18 06:34:38,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352af16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:38, skipping insertion in model container [2020-07-18 06:34:38,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:37" (2/3) ... [2020-07-18 06:34:38,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352af16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:38, skipping insertion in model container [2020-07-18 06:34:38,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:38" (3/3) ... [2020-07-18 06:34:38,267 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2020-07-18 06:34:38,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:34:38,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:34:38,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:34:38,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:34:38,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:34:38,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:34:38,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:34:38,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:34:38,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:34:38,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:34:38,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:34:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-07-18 06:34:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-18 06:34:38,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:34:38,351 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] [2020-07-18 06:34:38,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:34:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:34:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash 36846836, now seen corresponding path program 1 times [2020-07-18 06:34:38,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:34:38,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78883696] [2020-07-18 06:34:38,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:34:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:38,612 INFO L280 TraceCheckUtils]: 0: Hoare triple {52#true} assume true; {52#true} is VALID [2020-07-18 06:34:38,612 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {52#true} {52#true} #109#return; {52#true} is VALID [2020-07-18 06:34:38,614 INFO L263 TraceCheckUtils]: 0: Hoare triple {52#true} call ULTIMATE.init(); {52#true} is VALID [2020-07-18 06:34:38,615 INFO L280 TraceCheckUtils]: 1: Hoare triple {52#true} assume true; {52#true} is VALID [2020-07-18 06:34:38,615 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {52#true} {52#true} #109#return; {52#true} is VALID [2020-07-18 06:34:38,616 INFO L263 TraceCheckUtils]: 3: Hoare triple {52#true} call #t~ret6 := main(); {52#true} is VALID [2020-07-18 06:34:38,616 INFO L280 TraceCheckUtils]: 4: Hoare triple {52#true} ~c~1 := #t~nondet5; {52#true} is VALID [2020-07-18 06:34:38,616 INFO L280 TraceCheckUtils]: 5: Hoare triple {52#true} havoc #t~nondet5; {52#true} is VALID [2020-07-18 06:34:38,617 INFO L280 TraceCheckUtils]: 6: Hoare triple {52#true} assume 0 != ~c~1 % 256; {52#true} is VALID [2020-07-18 06:34:38,617 INFO L263 TraceCheckUtils]: 7: Hoare triple {52#true} call f(1); {52#true} is VALID [2020-07-18 06:34:38,618 INFO L280 TraceCheckUtils]: 8: Hoare triple {52#true} ~d := #in~d; {52#true} is VALID [2020-07-18 06:34:38,618 INFO L280 TraceCheckUtils]: 9: Hoare triple {52#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {52#true} is VALID [2020-07-18 06:34:38,619 INFO L280 TraceCheckUtils]: 10: Hoare triple {52#true} ~x~0 := #t~nondet0; {52#true} is VALID [2020-07-18 06:34:38,619 INFO L280 TraceCheckUtils]: 11: Hoare triple {52#true} havoc #t~nondet0; {52#true} is VALID [2020-07-18 06:34:38,619 INFO L280 TraceCheckUtils]: 12: Hoare triple {52#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {52#true} is VALID [2020-07-18 06:34:38,620 INFO L280 TraceCheckUtils]: 13: Hoare triple {52#true} ~y~0 := #t~nondet1; {52#true} is VALID [2020-07-18 06:34:38,620 INFO L280 TraceCheckUtils]: 14: Hoare triple {52#true} havoc #t~nondet1; {52#true} is VALID [2020-07-18 06:34:38,621 INFO L280 TraceCheckUtils]: 15: Hoare triple {52#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {52#true} is VALID [2020-07-18 06:34:38,621 INFO L280 TraceCheckUtils]: 16: Hoare triple {52#true} ~k~0 := #t~nondet2; {52#true} is VALID [2020-07-18 06:34:38,622 INFO L280 TraceCheckUtils]: 17: Hoare triple {52#true} havoc #t~nondet2; {52#true} is VALID [2020-07-18 06:34:38,625 INFO L280 TraceCheckUtils]: 18: Hoare triple {52#true} ~z~0 := 1; {56#(<= 1 f_~z~0)} is VALID [2020-07-18 06:34:38,626 INFO L280 TraceCheckUtils]: 19: Hoare triple {56#(<= 1 f_~z~0)} assume !!(~k~0 <= 1073741823); {56#(<= 1 f_~z~0)} is VALID [2020-07-18 06:34:38,630 INFO L280 TraceCheckUtils]: 20: Hoare triple {56#(<= 1 f_~z~0)} assume !(~z~0 < ~k~0); {56#(<= 1 f_~z~0)} is VALID [2020-07-18 06:34:38,632 INFO L263 TraceCheckUtils]: 21: Hoare triple {56#(<= 1 f_~z~0)} call __VERIFIER_assert((if ~z~0 >= 1 then 1 else 0)); {57#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:34:38,633 INFO L280 TraceCheckUtils]: 22: Hoare triple {57#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {58#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:34:38,634 INFO L280 TraceCheckUtils]: 23: Hoare triple {58#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {53#false} is VALID [2020-07-18 06:34:38,635 INFO L280 TraceCheckUtils]: 24: Hoare triple {53#false} assume !false; {53#false} is VALID [2020-07-18 06:34:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:34:38,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78883696] [2020-07-18 06:34:38,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:34:38,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 06:34:38,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717591361] [2020-07-18 06:34:38,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-18 06:34:38,653 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:34:38,657 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:34:38,701 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:38,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:34:38,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:34:38,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:34:38,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:34:38,715 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-07-18 06:34:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:39,109 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-07-18 06:34:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-18 06:34:39,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-18 06:34:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:34:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:34:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2020-07-18 06:34:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:34:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2020-07-18 06:34:39,134 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 107 transitions. [2020-07-18 06:34:39,287 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:39,294 INFO L225 Difference]: With dead ends: 84 [2020-07-18 06:34:39,295 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 06:34:39,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 06:34:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 06:34:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 06:34:39,328 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:34:39,329 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 06:34:39,330 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:34:39,330 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:34:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:39,331 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:34:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:34:39,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:39,332 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:39,332 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:34:39,332 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:34:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:39,333 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:34:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:34:39,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:39,333 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:39,333 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:34:39,334 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:34:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 06:34:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 06:34:39,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-07-18 06:34:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:34:39,337 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 06:34:39,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:34:39,337 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 06:34:39,337 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:34:39,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:39,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:34:39,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 06:34:39,615 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,615 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,615 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-18 06:34:39,616 INFO L271 CegarLoopResult]: At program point L27(lines 27 34) the Hoare annotation is: true [2020-07-18 06:34:39,616 INFO L271 CegarLoopResult]: At program point L27-2(lines 25 35) the Hoare annotation is: true [2020-07-18 06:34:39,616 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,616 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,616 INFO L264 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,617 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,617 INFO L264 CegarLoopResult]: At program point L19-4(line 19) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,617 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,617 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,617 INFO L271 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point L15-6(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point L15-7(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point fEXIT(lines 14 36) the Hoare annotation is: true [2020-07-18 06:34:39,618 INFO L271 CegarLoopResult]: At program point L15-8(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,619 INFO L271 CegarLoopResult]: At program point L15-9(line 15) the Hoare annotation is: true [2020-07-18 06:34:39,619 INFO L271 CegarLoopResult]: At program point fENTRY(lines 14 36) the Hoare annotation is: true [2020-07-18 06:34:39,619 INFO L271 CegarLoopResult]: At program point L28(lines 28 29) the Hoare annotation is: true [2020-07-18 06:34:39,619 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,619 INFO L264 CegarLoopResult]: At program point L20(lines 14 36) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,620 INFO L264 CegarLoopResult]: At program point L16(lines 16 18) the Hoare annotation is: (<= 1 f_~z~0) [2020-07-18 06:34:39,620 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-18 06:34:39,620 INFO L271 CegarLoopResult]: At program point L25-2(lines 14 36) the Hoare annotation is: true [2020-07-18 06:34:39,620 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-07-18 06:34:39,620 INFO L271 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true [2020-07-18 06:34:39,620 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:34:39,621 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:34:39,622 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:34:39,622 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-18 06:34:39,622 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-18 06:34:39,622 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:34:39,622 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 37 45) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 37 45) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point L42-1(lines 39 43) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 37 45) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-07-18 06:34:39,623 INFO L271 CegarLoopResult]: At program point L39(lines 39 43) the Hoare annotation is: true [2020-07-18 06:34:39,624 INFO L271 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: true [2020-07-18 06:34:39,624 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-18 06:34:39,624 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:34:39,624 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-18 06:34:39,624 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:34:39,625 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:34:39,625 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-18 06:34:39,630 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 06:34:39,631 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:34:39,632 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:34:39,633 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-18 06:34:39,633 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-18 06:34:39,639 INFO L163 areAnnotationChecker]: CFG has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:34:39,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:34:39 BoogieIcfgContainer [2020-07-18 06:34:39,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:34:39,657 INFO L168 Benchmark]: Toolchain (without parser) took 2289.16 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.4 MB in the beginning and 136.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:39,658 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 138.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 06:34:39,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.04 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:39,660 INFO L168 Benchmark]: Boogie Preprocessor took 127.55 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:39,661 INFO L168 Benchmark]: RCFGBuilder took 475.31 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 155.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:39,662 INFO L168 Benchmark]: TraceAbstraction took 1393.87 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 154.2 MB in the beginning and 136.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:39,666 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 0.80 ms. Allocated memory is still 138.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.04 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.55 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.31 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 155.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1393.87 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 154.2 MB in the beginning and 136.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for f Derived contract for procedure f: 1 - ProcedureContractResult [Line: 37]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 24 SDslu, 132 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 84 PreInvPairs, 143 NumberOfFragments, 88 HoareAnnotationTreeSize, 84 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 49 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 864 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 proved your program to be correct! Received shutdown request...