/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/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:48:35,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:35,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:35,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-18 00:48:36,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:36,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:36,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:36,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:36,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:36,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:36,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:36,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:36,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:36,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:36,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:36,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:36,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:48:36,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:36,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:36,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:36,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:48:36,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:36,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:36,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:36,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:36,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:36,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:36,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:36,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:36,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:36,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:36,084 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:36,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:36,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:36,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:36,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:36,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:36,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:36,085 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:36,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:36,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:36,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:36,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:36,433 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:36,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-18 00:48:36,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b45e8ddc/1b491846c6d147949870a65100d9e280/FLAGd1d0bbc98 [2020-07-18 00:48:36,901 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:36,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-18 00:48:36,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b45e8ddc/1b491846c6d147949870a65100d9e280/FLAGd1d0bbc98 [2020-07-18 00:48:37,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b45e8ddc/1b491846c6d147949870a65100d9e280 [2020-07-18 00:48:37,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:37,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:37,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:37,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:37,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:37,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce2c956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37, skipping insertion in model container [2020-07-18 00:48:37,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:37,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:37,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:37,513 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:37,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:37,547 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:37,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37 WrapperNode [2020-07-18 00:48:37,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:37,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:37,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:37,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:37,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... [2020-07-18 00:48:37,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:37,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:37,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:37,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:37,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:48:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:48:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:48:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:48:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:38,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:38,043 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 00:48:38,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:38 BoogieIcfgContainer [2020-07-18 00:48:38,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:38,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:38,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:38,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:38,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:37" (1/3) ... [2020-07-18 00:48:38,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335815b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:38, skipping insertion in model container [2020-07-18 00:48:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:37" (2/3) ... [2020-07-18 00:48:38,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335815b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:38, skipping insertion in model container [2020-07-18 00:48:38,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:38" (3/3) ... [2020-07-18 00:48:38,072 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-07-18 00:48:38,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:38,107 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:38,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:38,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:38,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:38,144 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:38,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:38,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:38,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:38,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:38,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-18 00:48:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-18 00:48:38,172 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:38,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:38,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:38,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2141903635, now seen corresponding path program 1 times [2020-07-18 00:48:38,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:38,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416467351] [2020-07-18 00:48:38,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:38,452 INFO L280 TraceCheckUtils]: 0: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-18 00:48:38,452 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {37#true} {37#true} #67#return; {37#true} is VALID [2020-07-18 00:48:38,455 INFO L263 TraceCheckUtils]: 0: Hoare triple {37#true} call ULTIMATE.init(); {37#true} is VALID [2020-07-18 00:48:38,455 INFO L280 TraceCheckUtils]: 1: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-18 00:48:38,456 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {37#true} {37#true} #67#return; {37#true} is VALID [2020-07-18 00:48:38,456 INFO L263 TraceCheckUtils]: 3: Hoare triple {37#true} call #t~ret3 := main(); {37#true} is VALID [2020-07-18 00:48:38,457 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#true} havoc ~offset~0; {37#true} is VALID [2020-07-18 00:48:38,457 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#true} havoc ~length~0; {37#true} is VALID [2020-07-18 00:48:38,458 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {37#true} is VALID [2020-07-18 00:48:38,458 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#true} ~nlen~0 := #t~nondet0; {37#true} is VALID [2020-07-18 00:48:38,458 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#true} havoc #t~nondet0; {37#true} is VALID [2020-07-18 00:48:38,459 INFO L280 TraceCheckUtils]: 9: Hoare triple {37#true} havoc ~i~0; {37#true} is VALID [2020-07-18 00:48:38,459 INFO L280 TraceCheckUtils]: 10: Hoare triple {37#true} havoc ~j~0; {37#true} is VALID [2020-07-18 00:48:38,460 INFO L280 TraceCheckUtils]: 11: Hoare triple {37#true} ~i~0 := 0; {37#true} is VALID [2020-07-18 00:48:38,462 INFO L280 TraceCheckUtils]: 12: Hoare triple {37#true} assume !!(~i~0 < ~nlen~0); {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 00:48:38,465 INFO L280 TraceCheckUtils]: 13: Hoare triple {41#(< main_~i~0 main_~nlen~0)} ~j~0 := 0; {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 00:48:38,466 INFO L280 TraceCheckUtils]: 14: Hoare triple {41#(< main_~i~0 main_~nlen~0)} assume !!(~j~0 < 8); {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 00:48:38,468 INFO L263 TraceCheckUtils]: 15: Hoare triple {41#(< main_~i~0 main_~nlen~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {42#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 00:48:38,470 INFO L280 TraceCheckUtils]: 16: Hoare triple {42#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {43#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 00:48:38,471 INFO L280 TraceCheckUtils]: 17: Hoare triple {43#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {38#false} is VALID [2020-07-18 00:48:38,472 INFO L280 TraceCheckUtils]: 18: Hoare triple {38#false} assume !false; {38#false} is VALID [2020-07-18 00:48:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:48:38,478 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:38,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416467351] [2020-07-18 00:48:38,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:38,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:48:38,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862991915] [2020-07-18 00:48:38,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-18 00:48:38,494 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:38,500 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:48:38,540 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:38,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:48:38,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:38,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:48:38,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:48:38,554 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-07-18 00:48:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:38,851 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-07-18 00:48:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:48:38,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-18 00:48:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:48:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2020-07-18 00:48:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:48:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2020-07-18 00:48:38,869 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 72 transitions. [2020-07-18 00:48:39,009 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:39,022 INFO L225 Difference]: With dead ends: 60 [2020-07-18 00:48:39,023 INFO L226 Difference]: Without dead ends: 33 [2020-07-18 00:48:39,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:48:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-18 00:48:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-18 00:48:39,102 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:39,103 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand 33 states. [2020-07-18 00:48:39,103 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 00:48:39,104 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 00:48:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:39,108 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 00:48:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:48:39,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:39,109 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:39,109 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 00:48:39,110 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 00:48:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:39,114 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 00:48:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:48:39,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:39,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:39,115 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:39,115 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-18 00:48:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-18 00:48:39,120 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-07-18 00:48:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:39,120 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-18 00:48:39,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:48:39,120 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states and 34 transitions. [2020-07-18 00:48:39,170 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:48:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 00:48:39,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:39,172 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:39,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:39,172 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1520201371, now seen corresponding path program 1 times [2020-07-18 00:48:39,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:39,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471699317] [2020-07-18 00:48:39,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,297 INFO L280 TraceCheckUtils]: 0: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 00:48:39,298 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {300#true} {300#true} #67#return; {300#true} is VALID [2020-07-18 00:48:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,307 INFO L280 TraceCheckUtils]: 0: Hoare triple {300#true} ~cond := #in~cond; {300#true} is VALID [2020-07-18 00:48:39,307 INFO L280 TraceCheckUtils]: 1: Hoare triple {300#true} assume !(0 == ~cond); {300#true} is VALID [2020-07-18 00:48:39,308 INFO L280 TraceCheckUtils]: 2: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 00:48:39,309 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {300#true} {304#(< 0 (+ main_~i~0 1))} #71#return; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,309 INFO L263 TraceCheckUtils]: 0: Hoare triple {300#true} call ULTIMATE.init(); {300#true} is VALID [2020-07-18 00:48:39,310 INFO L280 TraceCheckUtils]: 1: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 00:48:39,310 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {300#true} {300#true} #67#return; {300#true} is VALID [2020-07-18 00:48:39,310 INFO L263 TraceCheckUtils]: 3: Hoare triple {300#true} call #t~ret3 := main(); {300#true} is VALID [2020-07-18 00:48:39,311 INFO L280 TraceCheckUtils]: 4: Hoare triple {300#true} havoc ~offset~0; {300#true} is VALID [2020-07-18 00:48:39,311 INFO L280 TraceCheckUtils]: 5: Hoare triple {300#true} havoc ~length~0; {300#true} is VALID [2020-07-18 00:48:39,311 INFO L280 TraceCheckUtils]: 6: Hoare triple {300#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {300#true} is VALID [2020-07-18 00:48:39,311 INFO L280 TraceCheckUtils]: 7: Hoare triple {300#true} ~nlen~0 := #t~nondet0; {300#true} is VALID [2020-07-18 00:48:39,312 INFO L280 TraceCheckUtils]: 8: Hoare triple {300#true} havoc #t~nondet0; {300#true} is VALID [2020-07-18 00:48:39,312 INFO L280 TraceCheckUtils]: 9: Hoare triple {300#true} havoc ~i~0; {300#true} is VALID [2020-07-18 00:48:39,312 INFO L280 TraceCheckUtils]: 10: Hoare triple {300#true} havoc ~j~0; {300#true} is VALID [2020-07-18 00:48:39,313 INFO L280 TraceCheckUtils]: 11: Hoare triple {300#true} ~i~0 := 0; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,314 INFO L280 TraceCheckUtils]: 12: Hoare triple {304#(< 0 (+ main_~i~0 1))} assume !!(~i~0 < ~nlen~0); {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,315 INFO L280 TraceCheckUtils]: 13: Hoare triple {304#(< 0 (+ main_~i~0 1))} ~j~0 := 0; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,316 INFO L280 TraceCheckUtils]: 14: Hoare triple {304#(< 0 (+ main_~i~0 1))} assume !!(~j~0 < 8); {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,316 INFO L263 TraceCheckUtils]: 15: Hoare triple {304#(< 0 (+ main_~i~0 1))} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {300#true} is VALID [2020-07-18 00:48:39,317 INFO L280 TraceCheckUtils]: 16: Hoare triple {300#true} ~cond := #in~cond; {300#true} is VALID [2020-07-18 00:48:39,317 INFO L280 TraceCheckUtils]: 17: Hoare triple {300#true} assume !(0 == ~cond); {300#true} is VALID [2020-07-18 00:48:39,317 INFO L280 TraceCheckUtils]: 18: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 00:48:39,318 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {300#true} {304#(< 0 (+ main_~i~0 1))} #71#return; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 00:48:39,320 INFO L263 TraceCheckUtils]: 20: Hoare triple {304#(< 0 (+ main_~i~0 1))} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {309#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 00:48:39,320 INFO L280 TraceCheckUtils]: 21: Hoare triple {309#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {310#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 00:48:39,321 INFO L280 TraceCheckUtils]: 22: Hoare triple {310#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {301#false} is VALID [2020-07-18 00:48:39,322 INFO L280 TraceCheckUtils]: 23: Hoare triple {301#false} assume !false; {301#false} is VALID [2020-07-18 00:48:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:48:39,324 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:39,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471699317] [2020-07-18 00:48:39,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:39,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:48:39,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356007455] [2020-07-18 00:48:39,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-18 00:48:39,326 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:39,327 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:48:39,361 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:39,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:48:39,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:39,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:48:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:48:39,362 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-07-18 00:48:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:39,578 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-18 00:48:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:48:39,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-18 00:48:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:48:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2020-07-18 00:48:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:48:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2020-07-18 00:48:39,585 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 49 transitions. [2020-07-18 00:48:39,644 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:39,647 INFO L225 Difference]: With dead ends: 49 [2020-07-18 00:48:39,647 INFO L226 Difference]: Without dead ends: 47 [2020-07-18 00:48:39,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:48:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-18 00:48:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-07-18 00:48:39,702 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:39,703 INFO L82 GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand 45 states. [2020-07-18 00:48:39,703 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 45 states. [2020-07-18 00:48:39,703 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 45 states. [2020-07-18 00:48:39,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:39,708 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-07-18 00:48:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-07-18 00:48:39,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:39,709 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:39,709 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 47 states. [2020-07-18 00:48:39,709 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 47 states. [2020-07-18 00:48:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:39,713 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-07-18 00:48:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-07-18 00:48:39,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:39,714 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:39,715 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:39,715 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-18 00:48:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-18 00:48:39,718 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 24 [2020-07-18 00:48:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:39,719 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-18 00:48:39,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:48:39,719 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 45 states and 48 transitions. [2020-07-18 00:48:39,787 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-18 00:48:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-18 00:48:39,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:39,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:39,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:39,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1589830701, now seen corresponding path program 1 times [2020-07-18 00:48:39,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:39,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567481734] [2020-07-18 00:48:39,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,851 INFO L280 TraceCheckUtils]: 0: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 00:48:39,851 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {597#true} {597#true} #67#return; {597#true} is VALID [2020-07-18 00:48:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:39,857 INFO L280 TraceCheckUtils]: 0: Hoare triple {597#true} ~cond := #in~cond; {597#true} is VALID [2020-07-18 00:48:39,858 INFO L280 TraceCheckUtils]: 1: Hoare triple {597#true} assume !(0 == ~cond); {597#true} is VALID [2020-07-18 00:48:39,858 INFO L280 TraceCheckUtils]: 2: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 00:48:39,859 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {597#true} {598#false} #71#return; {598#false} is VALID [2020-07-18 00:48:39,859 INFO L263 TraceCheckUtils]: 0: Hoare triple {597#true} call ULTIMATE.init(); {597#true} is VALID [2020-07-18 00:48:39,859 INFO L280 TraceCheckUtils]: 1: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 00:48:39,860 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {597#true} {597#true} #67#return; {597#true} is VALID [2020-07-18 00:48:39,860 INFO L263 TraceCheckUtils]: 3: Hoare triple {597#true} call #t~ret3 := main(); {597#true} is VALID [2020-07-18 00:48:39,860 INFO L280 TraceCheckUtils]: 4: Hoare triple {597#true} havoc ~offset~0; {597#true} is VALID [2020-07-18 00:48:39,861 INFO L280 TraceCheckUtils]: 5: Hoare triple {597#true} havoc ~length~0; {597#true} is VALID [2020-07-18 00:48:39,861 INFO L280 TraceCheckUtils]: 6: Hoare triple {597#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {597#true} is VALID [2020-07-18 00:48:39,862 INFO L280 TraceCheckUtils]: 7: Hoare triple {597#true} ~nlen~0 := #t~nondet0; {597#true} is VALID [2020-07-18 00:48:39,862 INFO L280 TraceCheckUtils]: 8: Hoare triple {597#true} havoc #t~nondet0; {597#true} is VALID [2020-07-18 00:48:39,862 INFO L280 TraceCheckUtils]: 9: Hoare triple {597#true} havoc ~i~0; {597#true} is VALID [2020-07-18 00:48:39,863 INFO L280 TraceCheckUtils]: 10: Hoare triple {597#true} havoc ~j~0; {597#true} is VALID [2020-07-18 00:48:39,863 INFO L280 TraceCheckUtils]: 11: Hoare triple {597#true} ~i~0 := 0; {597#true} is VALID [2020-07-18 00:48:39,863 INFO L280 TraceCheckUtils]: 12: Hoare triple {597#true} assume !!(~i~0 < ~nlen~0); {597#true} is VALID [2020-07-18 00:48:39,864 INFO L280 TraceCheckUtils]: 13: Hoare triple {597#true} ~j~0 := 0; {601#(<= main_~j~0 0)} is VALID [2020-07-18 00:48:39,865 INFO L280 TraceCheckUtils]: 14: Hoare triple {601#(<= main_~j~0 0)} assume !(~j~0 < 8); {598#false} is VALID [2020-07-18 00:48:39,866 INFO L280 TraceCheckUtils]: 15: Hoare triple {598#false} #t~post1 := ~i~0; {598#false} is VALID [2020-07-18 00:48:39,866 INFO L280 TraceCheckUtils]: 16: Hoare triple {598#false} ~i~0 := 1 + #t~post1; {598#false} is VALID [2020-07-18 00:48:39,866 INFO L280 TraceCheckUtils]: 17: Hoare triple {598#false} havoc #t~post1; {598#false} is VALID [2020-07-18 00:48:39,867 INFO L280 TraceCheckUtils]: 18: Hoare triple {598#false} assume !!(~i~0 < ~nlen~0); {598#false} is VALID [2020-07-18 00:48:39,867 INFO L280 TraceCheckUtils]: 19: Hoare triple {598#false} ~j~0 := 0; {598#false} is VALID [2020-07-18 00:48:39,868 INFO L280 TraceCheckUtils]: 20: Hoare triple {598#false} assume !!(~j~0 < 8); {598#false} is VALID [2020-07-18 00:48:39,868 INFO L263 TraceCheckUtils]: 21: Hoare triple {598#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {597#true} is VALID [2020-07-18 00:48:39,868 INFO L280 TraceCheckUtils]: 22: Hoare triple {597#true} ~cond := #in~cond; {597#true} is VALID [2020-07-18 00:48:39,869 INFO L280 TraceCheckUtils]: 23: Hoare triple {597#true} assume !(0 == ~cond); {597#true} is VALID [2020-07-18 00:48:39,869 INFO L280 TraceCheckUtils]: 24: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 00:48:39,870 INFO L275 TraceCheckUtils]: 25: Hoare quadruple {597#true} {598#false} #71#return; {598#false} is VALID [2020-07-18 00:48:39,870 INFO L263 TraceCheckUtils]: 26: Hoare triple {598#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {598#false} is VALID [2020-07-18 00:48:39,870 INFO L280 TraceCheckUtils]: 27: Hoare triple {598#false} ~cond := #in~cond; {598#false} is VALID [2020-07-18 00:48:39,871 INFO L280 TraceCheckUtils]: 28: Hoare triple {598#false} assume 0 == ~cond; {598#false} is VALID [2020-07-18 00:48:39,871 INFO L280 TraceCheckUtils]: 29: Hoare triple {598#false} assume !false; {598#false} is VALID [2020-07-18 00:48:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:48:39,944 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:39,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567481734] [2020-07-18 00:48:39,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:39,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 00:48:39,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244510901] [2020-07-18 00:48:39,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-07-18 00:48:39,947 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:39,947 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 00:48:39,948 WARN L140 InductivityCheck]: Transition 608#(and (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) ( _ , assume !false; , 598#false ) not inductive [2020-07-18 00:48:39,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:48:39,949 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inductivity failed at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.checkInductivity(InductivityCheck.java:103) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.(InductivityCheck.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.constructInterpolantAutomaton(BasicCegarLoop.java:583) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:48:39,955 INFO L168 Benchmark]: Toolchain (without parser) took 2654.99 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 104.7 MB in the beginning and 89.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,956 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.56 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,958 INFO L168 Benchmark]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 139.5 MB. Free memory was 94.5 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,959 INFO L168 Benchmark]: RCFGBuilder took 471.26 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.8 MB in the beginning and 164.8 MB in the end (delta: -72.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,960 INFO L168 Benchmark]: TraceAbstraction took 1896.55 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 89.3 MB in the end (delta: 74.8 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:39,964 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 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.56 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 139.5 MB. Free memory was 94.5 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.26 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.8 MB in the beginning and 164.8 MB in the end (delta: -72.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1896.55 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 89.3 MB in the end (delta: 74.8 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inductivity failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inductivity failed: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...