/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:22:18,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:18,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:19,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:19,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:19,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:19,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:19,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:19,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:19,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:19,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:19,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:19,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:19,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:19,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:19,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:19,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:19,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:19,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:19,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:19,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:19,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:19,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:19,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:19,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:22:19,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:19,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:19,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:19,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:22:19,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:19,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:19,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:19,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:19,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:19,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:19,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:19,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:19,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:19,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:19,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:19,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:19,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:19,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:19,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:19,069 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:19,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:19,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:19,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:19,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:19,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:19,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:19,070 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:19,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:19,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:19,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:19,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:19,412 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:19,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2020-07-10 20:22:19,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0696fd71d/771fe4f9390b4f76bea37970462ac16c/FLAG1484ca80a [2020-07-10 20:22:20,075 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:20,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2020-07-10 20:22:20,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0696fd71d/771fe4f9390b4f76bea37970462ac16c/FLAG1484ca80a [2020-07-10 20:22:20,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0696fd71d/771fe4f9390b4f76bea37970462ac16c [2020-07-10 20:22:20,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:20,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:20,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:20,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:20,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:20,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a6f723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20, skipping insertion in model container [2020-07-10 20:22:20,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:20,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:20,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:20,742 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:20,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:20,799 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:20,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20 WrapperNode [2020-07-10 20:22:20,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:20,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:20,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:20,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:20,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (1/1) ... [2020-07-10 20:22:20,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:20,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:20,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:20,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:20,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (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 [2020-07-10 20:22:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 20:22:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-10 20:22:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 20:22:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 20:22:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 20:22:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 20:22:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-10 20:22:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:21,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:21,487 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:22:21,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:21 BoogieIcfgContainer [2020-07-10 20:22:21,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:21,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:21,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:21,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:21,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:20" (1/3) ... [2020-07-10 20:22:21,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f181228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:21, skipping insertion in model container [2020-07-10 20:22:21,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:20" (2/3) ... [2020-07-10 20:22:21,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f181228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:21, skipping insertion in model container [2020-07-10 20:22:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:21" (3/3) ... [2020-07-10 20:22:21,509 INFO L109 eAbstractionObserver]: Analyzing ICFG trex04.c [2020-07-10 20:22:21,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:21,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:21,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:21,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:21,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:21,569 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:21,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:21,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:21,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:21,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:21,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-10 20:22:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-10 20:22:21,602 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:21,603 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] [2020-07-10 20:22:21,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash 179527167, now seen corresponding path program 1 times [2020-07-10 20:22:21,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:21,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423780271] [2020-07-10 20:22:21,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:21,935 INFO L280 TraceCheckUtils]: 0: Hoare triple {58#true} assume true; {58#true} is VALID [2020-07-10 20:22:21,936 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {58#true} {58#true} #109#return; {58#true} is VALID [2020-07-10 20:22:21,938 INFO L263 TraceCheckUtils]: 0: Hoare triple {58#true} call ULTIMATE.init(); {58#true} is VALID [2020-07-10 20:22:21,939 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#true} assume true; {58#true} is VALID [2020-07-10 20:22:21,940 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {58#true} {58#true} #109#return; {58#true} is VALID [2020-07-10 20:22:21,940 INFO L263 TraceCheckUtils]: 3: Hoare triple {58#true} call #t~ret9 := main(); {58#true} is VALID [2020-07-10 20:22:21,941 INFO L280 TraceCheckUtils]: 4: Hoare triple {58#true} ~d~0 := 1; {58#true} is VALID [2020-07-10 20:22:21,941 INFO L280 TraceCheckUtils]: 5: Hoare triple {58#true} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {58#true} is VALID [2020-07-10 20:22:21,942 INFO L280 TraceCheckUtils]: 6: Hoare triple {58#true} ~x~0 := #t~nondet4; {58#true} is VALID [2020-07-10 20:22:21,942 INFO L280 TraceCheckUtils]: 7: Hoare triple {58#true} havoc #t~nondet4; {58#true} is VALID [2020-07-10 20:22:21,942 INFO L280 TraceCheckUtils]: 8: Hoare triple {58#true} assume !!(~x~0 <= 1000000 && ~x~0 >= -1000000); {58#true} is VALID [2020-07-10 20:22:21,943 INFO L280 TraceCheckUtils]: 9: Hoare triple {58#true} ~c1~1 := #t~nondet5; {58#true} is VALID [2020-07-10 20:22:21,945 INFO L280 TraceCheckUtils]: 10: Hoare triple {58#true} havoc #t~nondet5; {58#true} is VALID [2020-07-10 20:22:21,946 INFO L280 TraceCheckUtils]: 11: Hoare triple {58#true} ~c2~1 := #t~nondet6; {58#true} is VALID [2020-07-10 20:22:21,946 INFO L280 TraceCheckUtils]: 12: Hoare triple {58#true} havoc #t~nondet6; {58#true} is VALID [2020-07-10 20:22:21,947 INFO L280 TraceCheckUtils]: 13: Hoare triple {58#true} assume !(0 != ~c1~1 % 256); {58#true} is VALID [2020-07-10 20:22:21,948 INFO L280 TraceCheckUtils]: 14: Hoare triple {58#true} assume !(0 != ~c2~1 % 256); {58#true} is VALID [2020-07-10 20:22:21,949 INFO L280 TraceCheckUtils]: 15: Hoare triple {58#true} ~c1~1 := #t~nondet7; {58#true} is VALID [2020-07-10 20:22:21,950 INFO L280 TraceCheckUtils]: 16: Hoare triple {58#true} havoc #t~nondet7; {58#true} is VALID [2020-07-10 20:22:21,951 INFO L280 TraceCheckUtils]: 17: Hoare triple {58#true} ~c2~1 := #t~nondet8; {58#true} is VALID [2020-07-10 20:22:21,951 INFO L280 TraceCheckUtils]: 18: Hoare triple {58#true} havoc #t~nondet8; {58#true} is VALID [2020-07-10 20:22:21,952 INFO L280 TraceCheckUtils]: 19: Hoare triple {58#true} assume !(0 != ~c1~1 % 256); {58#true} is VALID [2020-07-10 20:22:21,952 INFO L280 TraceCheckUtils]: 20: Hoare triple {58#true} assume !(0 != ~c2~1 % 256); {58#true} is VALID [2020-07-10 20:22:21,954 INFO L280 TraceCheckUtils]: 21: Hoare triple {58#true} assume !(~x~0 > 0); {62#(<= main_~x~0 0)} is VALID [2020-07-10 20:22:21,956 INFO L263 TraceCheckUtils]: 22: Hoare triple {62#(<= main_~x~0 0)} call __VERIFIER_assert((if ~x~0 <= 0 then 1 else 0)); {63#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 20:22:21,958 INFO L280 TraceCheckUtils]: 23: Hoare triple {63#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {64#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 20:22:21,960 INFO L280 TraceCheckUtils]: 24: Hoare triple {64#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {59#false} is VALID [2020-07-10 20:22:21,960 INFO L280 TraceCheckUtils]: 25: Hoare triple {59#false} assume !false; {59#false} is VALID [2020-07-10 20:22:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:21,966 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:21,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423780271] [2020-07-10 20:22:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:21,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 20:22:21,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302418331] [2020-07-10 20:22:21,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-10 20:22:21,985 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:21,989 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 20:22:22,054 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:22,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 20:22:22,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:22,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 20:22:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 20:22:22,069 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2020-07-10 20:22:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:22,460 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-07-10 20:22:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 20:22:22,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-10 20:22:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 20:22:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2020-07-10 20:22:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 20:22:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2020-07-10 20:22:22,482 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 77 transitions. [2020-07-10 20:22:22,621 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:22,629 INFO L225 Difference]: With dead ends: 66 [2020-07-10 20:22:22,629 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 20:22:22,635 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 [2020-07-10 20:22:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 20:22:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 20:22:22,666 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:22,666 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:22,667 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:22,667 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:22,668 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:22,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:22,669 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:22,669 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:22,669 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:22,670 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:22,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:22,670 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:22,671 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:22,671 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 20:22:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 20:22:22,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-07-10 20:22:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:22,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 20:22:22,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 20:22:22,674 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-10 20:22:22,674 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:22,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:22,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:22,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 20:22:22,947 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,947 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,947 INFO L271 CegarLoopResult]: At program point fooEXIT(lines 16 23) the Hoare annotation is: true [2020-07-10 20:22:22,948 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-10 20:22:22,948 INFO L271 CegarLoopResult]: At program point fooENTRY(lines 16 23) the Hoare annotation is: true [2020-07-10 20:22:22,948 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-07-10 20:22:22,948 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-07-10 20:22:22,948 INFO L271 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-07-10 20:22:22,949 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-07-10 20:22:22,949 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-07-10 20:22:22,949 INFO L271 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: true [2020-07-10 20:22:22,949 INFO L271 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-07-10 20:22:22,949 INFO L271 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point L21-4(lines 16 23) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point L20-5(lines 17 23) the Hoare annotation is: true [2020-07-10 20:22:22,950 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,951 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-10 20:22:22,951 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-10 20:22:22,951 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-10 20:22:22,951 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-10 20:22:22,952 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-10 20:22:22,952 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-10 20:22:22,952 INFO L271 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: true [2020-07-10 20:22:22,952 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 25 46) the Hoare annotation is: true [2020-07-10 20:22:22,952 INFO L271 CegarLoopResult]: At program point L40-1(lines 26 46) the Hoare annotation is: true [2020-07-10 20:22:22,952 INFO L264 CegarLoopResult]: At program point L40-2(lines 40 43) the Hoare annotation is: (<= main_~x~0 0) [2020-07-10 20:22:22,953 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-10 20:22:22,953 INFO L271 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-07-10 20:22:22,953 INFO L271 CegarLoopResult]: At program point L32-3(lines 26 46) the Hoare annotation is: true [2020-07-10 20:22:22,953 INFO L271 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L37-3(lines 26 46) the Hoare annotation is: true [2020-07-10 20:22:22,954 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 25 46) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-10 20:22:22,955 INFO L271 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: true [2020-07-10 20:22:22,956 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-07-10 20:22:22,956 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 46) the Hoare annotation is: true [2020-07-10 20:22:22,956 INFO L271 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true [2020-07-10 20:22:22,956 INFO L271 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: true [2020-07-10 20:22:22,957 INFO L271 CegarLoopResult]: At program point L30-3(line 30) the Hoare annotation is: true [2020-07-10 20:22:22,957 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-07-10 20:22:22,957 INFO L271 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: true [2020-07-10 20:22:22,957 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-07-10 20:22:22,957 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 7 12) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-10 20:22:22,958 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-10 20:22:22,958 INFO L264 CegarLoopResult]: At program point L8(lines 8 10) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-10 20:22:22,958 INFO L264 CegarLoopResult]: At program point L8-2(lines 7 12) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-10 20:22:22,958 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-10 20:22:22,965 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 20:22:22,966 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:22:22,966 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:22:22,968 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-10 20:22:22,968 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-10 20:22:22,975 INFO L163 areAnnotationChecker]: CFG has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 20:22:22,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:22:22 BoogieIcfgContainer [2020-07-10 20:22:22,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:22:22,994 INFO L168 Benchmark]: Toolchain (without parser) took 2505.30 ms. Allocated memory was 134.7 MB in the beginning and 224.9 MB in the end (delta: 90.2 MB). Free memory was 98.7 MB in the beginning and 146.8 MB in the end (delta: -48.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:22,995 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 134.7 MB. Free memory was 116.9 MB in the beginning and 116.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 20:22:22,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.80 ms. Allocated memory is still 134.7 MB. Free memory was 98.3 MB in the beginning and 88.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:22,997 INFO L168 Benchmark]: Boogie Preprocessor took 124.59 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 88.2 MB in the beginning and 176.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:22,998 INFO L168 Benchmark]: RCFGBuilder took 567.15 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 151.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:22,999 INFO L168 Benchmark]: TraceAbstraction took 1496.29 ms. Allocated memory was 198.7 MB in the beginning and 224.9 MB in the end (delta: 26.2 MB). Free memory was 151.2 MB in the beginning and 146.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:23,003 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 0.41 ms. Allocated memory is still 134.7 MB. Free memory was 116.9 MB in the beginning and 116.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.80 ms. Allocated memory is still 134.7 MB. Free memory was 98.3 MB in the beginning and 88.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.59 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 88.2 MB in the beginning and 176.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.15 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 151.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1496.29 ms. Allocated memory was 198.7 MB in the beginning and 224.9 MB in the end (delta: 26.2 MB). Free memory was 151.2 MB in the beginning and 146.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - ProcedureContractResult [Line: 16]: Procedure Contract for foo Derived contract for procedure foo: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: 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, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 6 SDslu, 170 SDs, 0 SdLazy, 12 SolverSat, 0 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=55occurred 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, 55 LocationsWithAnnotation, 77 PreInvPairs, 86 NumberOfFragments, 82 HoareAnnotationTreeSize, 77 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 55 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...