/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:51:59,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:51:59,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:51:59,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:51:59,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:51:59,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:51:59,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:51:59,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:51:59,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:51:59,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:51:59,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:51:59,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:51:59,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:51:59,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:51:59,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:51:59,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:51:59,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:51:59,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:51:59,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:51:59,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:51:59,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:51:59,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:51:59,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:51:59,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:51:59,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:51:59,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:51:59,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:51:59,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:51:59,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:51:59,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:51:59,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:51:59,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:51:59,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:51:59,293 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:51:59,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:51:59,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:51:59,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:51:59,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:51:59,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:51:59,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:51:59,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:51:59,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:51:59,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:51:59,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:51:59,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:51:59,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:51:59,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:51:59,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:51:59,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:51:59,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:51:59,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:51:59,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:51:59,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:51:59,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:51:59,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:51:59,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:51:59,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:51:59,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:51:59,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:51:59,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:51:59,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:51:59,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:51:59,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:51:59,666 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:51:59,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-17 22:51:59,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed4c9a15/4dc079ce19654af29dc767e87a6f727b/FLAG89f952224 [2020-07-17 22:52:00,126 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:52:00,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-17 22:52:00,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed4c9a15/4dc079ce19654af29dc767e87a6f727b/FLAG89f952224 [2020-07-17 22:52:00,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed4c9a15/4dc079ce19654af29dc767e87a6f727b [2020-07-17 22:52:00,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:52:00,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:52:00,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:00,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:52:00,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:52:00,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe1fb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00, skipping insertion in model container [2020-07-17 22:52:00,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:52:00,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:52:00,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:00,778 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:52:00,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:00,813 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:52:00,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00 WrapperNode [2020-07-17 22:52:00,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:00,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:52:00,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:52:00,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:52:00,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (1/1) ... [2020-07-17 22:52:00,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:52:00,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:52:00,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:52:00,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:52:00,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (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 [2020-07-17 22:52:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:52:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:52:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:52:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:52:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:52:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:52:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:52:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:52:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:52:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:52:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:52:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:52:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:52:01,326 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:52:01,326 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:52:01,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:01 BoogieIcfgContainer [2020-07-17 22:52:01,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:52:01,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:52:01,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:52:01,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:52:01,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:52:00" (1/3) ... [2020-07-17 22:52:01,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:01, skipping insertion in model container [2020-07-17 22:52:01,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:00" (2/3) ... [2020-07-17 22:52:01,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:01, skipping insertion in model container [2020-07-17 22:52:01,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:01" (3/3) ... [2020-07-17 22:52:01,340 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-07-17 22:52:01,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:52:01,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:52:01,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:52:01,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:52:01,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:52:01,438 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:52:01,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:52:01,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:52:01,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:52:01,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:52:01,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:52:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 22:52:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 22:52:01,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:01,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:52:01,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash -677001103, now seen corresponding path program 1 times [2020-07-17 22:52:01,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:01,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313017342] [2020-07-17 22:52:01,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:01,901 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-17 22:52:01,902 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {23#true} {23#true} #48#return; {23#true} is VALID [2020-07-17 22:52:01,904 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2020-07-17 22:52:01,905 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-17 22:52:01,905 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #48#return; {23#true} is VALID [2020-07-17 22:52:01,905 INFO L263 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret2 := main(); {23#true} is VALID [2020-07-17 22:52:01,906 INFO L280 TraceCheckUtils]: 4: Hoare triple {23#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~a~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~b~0 := #t~nondet1;havoc #t~nondet1;havoc ~res~0;havoc ~cnt~0; {23#true} is VALID [2020-07-17 22:52:01,907 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} assume !!(~a~0 <= 1000000); {23#true} is VALID [2020-07-17 22:52:01,908 INFO L280 TraceCheckUtils]: 6: Hoare triple {23#true} assume !!(0 <= ~b~0 && ~b~0 <= 1000000);~res~0 := ~a~0;~cnt~0 := ~b~0; {27#(and (or (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~a~0 main_~b~0) main_~res~0)) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} is VALID [2020-07-17 22:52:01,910 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(and (or (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~a~0 main_~b~0) main_~res~0)) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} assume !(~cnt~0 > 0); {28#(and (<= (+ main_~a~0 main_~b~0) main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} is VALID [2020-07-17 22:52:01,912 INFO L263 TraceCheckUtils]: 8: Hoare triple {28#(and (<= (+ main_~a~0 main_~b~0) main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} call __VERIFIER_assert((if ~res~0 == ~a~0 + ~b~0 then 1 else 0)); {29#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-17 22:52:01,913 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {30#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-17 22:52:01,914 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {24#false} is VALID [2020-07-17 22:52:01,915 INFO L280 TraceCheckUtils]: 11: Hoare triple {24#false} assume !false; {24#false} is VALID [2020-07-17 22:52:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:52:01,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313017342] [2020-07-17 22:52:01,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:52:01,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:52:01,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887383531] [2020-07-17 22:52:01,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-17 22:52:01,929 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:01,933 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:52:01,956 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:01,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:52:01,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:52:01,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:52:01,970 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-07-17 22:52:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:02,194 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-17 22:52:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 22:52:02,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-17 22:52:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:52:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 50 transitions. [2020-07-17 22:52:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:52:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 50 transitions. [2020-07-17 22:52:02,213 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 50 transitions. [2020-07-17 22:52:02,295 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:02,307 INFO L225 Difference]: With dead ends: 41 [2020-07-17 22:52:02,307 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 22:52:02,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:52:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 22:52:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 22:52:02,356 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:02,357 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-17 22:52:02,358 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:52:02,358 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:52:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:02,361 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-17 22:52:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:52:02,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:02,363 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:02,363 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:52:02,363 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:52:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:02,366 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-17 22:52:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:52:02,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:02,367 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:02,368 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:02,368 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 22:52:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-17 22:52:02,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-17 22:52:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:02,372 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-17 22:52:02,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:52:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:52:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:52:02,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:02,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:52:02,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:52:02,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash 523340046, now seen corresponding path program 1 times [2020-07-17 22:52:02,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:02,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125735629] [2020-07-17 22:52:02,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:02,607 INFO L280 TraceCheckUtils]: 0: Hoare triple {138#true} assume true; {138#true} is VALID [2020-07-17 22:52:02,607 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {138#true} {138#true} #48#return; {138#true} is VALID [2020-07-17 22:52:02,608 INFO L263 TraceCheckUtils]: 0: Hoare triple {138#true} call ULTIMATE.init(); {138#true} is VALID [2020-07-17 22:52:02,608 INFO L280 TraceCheckUtils]: 1: Hoare triple {138#true} assume true; {138#true} is VALID [2020-07-17 22:52:02,608 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {138#true} {138#true} #48#return; {138#true} is VALID [2020-07-17 22:52:02,609 INFO L263 TraceCheckUtils]: 3: Hoare triple {138#true} call #t~ret2 := main(); {138#true} is VALID [2020-07-17 22:52:02,609 INFO L280 TraceCheckUtils]: 4: Hoare triple {138#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~a~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~b~0 := #t~nondet1;havoc #t~nondet1;havoc ~res~0;havoc ~cnt~0; {138#true} is VALID [2020-07-17 22:52:02,609 INFO L280 TraceCheckUtils]: 5: Hoare triple {138#true} assume !!(~a~0 <= 1000000); {138#true} is VALID [2020-07-17 22:52:02,610 INFO L280 TraceCheckUtils]: 6: Hoare triple {138#true} assume !!(0 <= ~b~0 && ~b~0 <= 1000000);~res~0 := ~a~0;~cnt~0 := ~b~0; {142#(and (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~res~0 main_~cnt~0) (+ main_~a~0 main_~b~0)))} is VALID [2020-07-17 22:52:02,612 INFO L280 TraceCheckUtils]: 7: Hoare triple {142#(and (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~res~0 main_~cnt~0) (+ main_~a~0 main_~b~0)))} assume !!(~cnt~0 > 0);~cnt~0 := ~cnt~0 - 1;~res~0 := 1 + ~res~0; {143#(and (or (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~a~0 main_~b~0) main_~res~0)) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} is VALID [2020-07-17 22:52:02,613 INFO L280 TraceCheckUtils]: 8: Hoare triple {143#(and (or (<= (+ main_~a~0 main_~b~0) (+ main_~res~0 main_~cnt~0)) (<= (+ main_~a~0 main_~b~0) main_~res~0)) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} assume !(~cnt~0 > 0); {144#(and (<= (+ main_~a~0 main_~b~0) main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} is VALID [2020-07-17 22:52:02,615 INFO L263 TraceCheckUtils]: 9: Hoare triple {144#(and (<= (+ main_~a~0 main_~b~0) main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)))} call __VERIFIER_assert((if ~res~0 == ~a~0 + ~b~0 then 1 else 0)); {145#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-17 22:52:02,616 INFO L280 TraceCheckUtils]: 10: Hoare triple {145#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {146#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-17 22:52:02,617 INFO L280 TraceCheckUtils]: 11: Hoare triple {146#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {139#false} is VALID [2020-07-17 22:52:02,617 INFO L280 TraceCheckUtils]: 12: Hoare triple {139#false} assume !false; {139#false} is VALID [2020-07-17 22:52:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:52:02,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125735629] [2020-07-17 22:52:02,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395367418] [2020-07-17 22:52:02,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:52:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:02,663 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-17 22:52:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:02,676 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:52:02,831 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-17 22:52:02,909 INFO L263 TraceCheckUtils]: 0: Hoare triple {138#true} call ULTIMATE.init(); {138#true} is VALID [2020-07-17 22:52:02,909 INFO L280 TraceCheckUtils]: 1: Hoare triple {138#true} assume true; {138#true} is VALID [2020-07-17 22:52:02,910 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {138#true} {138#true} #48#return; {138#true} is VALID [2020-07-17 22:52:02,910 INFO L263 TraceCheckUtils]: 3: Hoare triple {138#true} call #t~ret2 := main(); {138#true} is VALID [2020-07-17 22:52:02,910 INFO L280 TraceCheckUtils]: 4: Hoare triple {138#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~a~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~b~0 := #t~nondet1;havoc #t~nondet1;havoc ~res~0;havoc ~cnt~0; {138#true} is VALID [2020-07-17 22:52:02,910 INFO L280 TraceCheckUtils]: 5: Hoare triple {138#true} assume !!(~a~0 <= 1000000); {138#true} is VALID [2020-07-17 22:52:02,911 INFO L280 TraceCheckUtils]: 6: Hoare triple {138#true} assume !!(0 <= ~b~0 && ~b~0 <= 1000000);~res~0 := ~a~0;~cnt~0 := ~b~0; {168#(and (= main_~res~0 main_~a~0) (= main_~cnt~0 main_~b~0))} is VALID [2020-07-17 22:52:02,912 INFO L280 TraceCheckUtils]: 7: Hoare triple {168#(and (= main_~res~0 main_~a~0) (= main_~cnt~0 main_~b~0))} assume !!(~cnt~0 > 0);~cnt~0 := ~cnt~0 - 1;~res~0 := 1 + ~res~0; {172#(and (<= main_~b~0 (+ main_~cnt~0 1)) (= main_~res~0 (+ main_~a~0 1)) (< 0 main_~b~0))} is VALID [2020-07-17 22:52:02,914 INFO L280 TraceCheckUtils]: 8: Hoare triple {172#(and (<= main_~b~0 (+ main_~cnt~0 1)) (= main_~res~0 (+ main_~a~0 1)) (< 0 main_~b~0))} assume !(~cnt~0 > 0); {176#(and (<= main_~b~0 1) (= main_~res~0 (+ main_~a~0 1)) (< 0 main_~b~0))} is VALID [2020-07-17 22:52:02,915 INFO L263 TraceCheckUtils]: 9: Hoare triple {176#(and (<= main_~b~0 1) (= main_~res~0 (+ main_~a~0 1)) (< 0 main_~b~0))} call __VERIFIER_assert((if ~res~0 == ~a~0 + ~b~0 then 1 else 0)); {180#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-17 22:52:02,916 INFO L280 TraceCheckUtils]: 10: Hoare triple {180#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {184#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-17 22:52:02,917 INFO L280 TraceCheckUtils]: 11: Hoare triple {184#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {139#false} is VALID [2020-07-17 22:52:02,917 INFO L280 TraceCheckUtils]: 12: Hoare triple {139#false} assume !false; {139#false} is VALID [2020-07-17 22:52:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:52:02,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:52:02,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-17 22:52:02,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494407589] [2020-07-17 22:52:02,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-07-17 22:52:02,922 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:02,922 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-17 22:52:02,948 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:02,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 22:52:02,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 22:52:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-17 22:52:02,950 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2020-07-17 22:52:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:03,291 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-17 22:52:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 22:52:03,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-07-17 22:52:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:52:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2020-07-17 22:52:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:52:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2020-07-17 22:52:03,297 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 17 transitions. [2020-07-17 22:52:03,327 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:03,327 INFO L225 Difference]: With dead ends: 16 [2020-07-17 22:52:03,327 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:52:03,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-07-17 22:52:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:52:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:52:03,330 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:03,330 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:52:03,331 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:52:03,331 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:52:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:03,332 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:52:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:52:03,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:03,333 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:03,333 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:52:03,334 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:52:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:03,334 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:52:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:52:03,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:03,335 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:03,335 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:03,335 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:52:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:52:03,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-17 22:52:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:03,337 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:52:03,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 22:52:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:52:03,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:03,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 22:52:03,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:52:03,701 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 22:52:03,701 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:52:03,701 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:52:03,701 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:52:03,701 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:52:03,702 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:52:03,702 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 22:52:03,702 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 22:52:03,702 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-17 22:52:03,702 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 22:52:03,702 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-17 22:52:03,703 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-17 22:52:03,703 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-17 22:52:03,703 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= main_~res~0 .cse0) (<= .cse1 .cse0))) [2020-07-17 22:52:03,703 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-17 22:52:03,703 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~res~0) (<= main_~res~0 .cse0))) [2020-07-17 22:52:03,704 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-17 22:52:03,704 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-07-17 22:52:03,704 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 22:52:03,704 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-17 22:52:03,704 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-17 22:52:03,704 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-17 22:52:03,705 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-17 22:52:03,705 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-17 22:52:03,710 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:52:03,711 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:52:03,712 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:52:03,713 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-17 22:52:03,713 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:52:03,713 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:52:03,713 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:52:03,713 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-17 22:52:03,714 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-17 22:52:03,714 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-17 22:52:03,714 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:52:03,718 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:52:03,719 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-17 22:52:03,719 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-17 22:52:03,719 INFO L163 areAnnotationChecker]: CFG has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:52:03,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:52:03 BoogieIcfgContainer [2020-07-17 22:52:03,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:52:03,739 INFO L168 Benchmark]: Toolchain (without parser) took 3164.20 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 101.4 MB in the beginning and 217.4 MB in the end (delta: -115.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:52:03,740 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 22:52:03,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.65 ms. Allocated memory is still 137.4 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:03,742 INFO L168 Benchmark]: Boogie Preprocessor took 127.75 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 180.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:03,743 INFO L168 Benchmark]: RCFGBuilder took 387.39 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 163.2 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:03,744 INFO L168 Benchmark]: TraceAbstraction took 2403.75 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 162.5 MB in the beginning and 217.4 MB in the end (delta: -54.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:52:03,748 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 0.56 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.65 ms. Allocated memory is still 137.4 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.75 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 180.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 387.39 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 163.2 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2403.75 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 162.5 MB in the beginning and 217.4 MB in the end (delta: -54.9 MB). There was no memory consumed. 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: 21]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res <= a + b) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 92 SDs, 0 SdLazy, 59 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 36 HoareAnnotationTreeSize, 10 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1767 SizeOfPredicates, 3 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...