/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/array-fpi/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 17:36:41,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 17:36:41,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 17:36:41,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 17:36:41,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 17:36:41,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 17:36:41,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 17:36:41,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 17:36:41,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 17:36:41,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 17:36:41,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 17:36:41,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 17:36:41,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 17:36:41,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 17:36:41,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 17:36:41,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 17:36:41,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 17:36:41,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 17:36:41,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 17:36:41,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 17:36:41,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 17:36:41,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 17:36:41,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 17:36:41,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 17:36:41,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 17:36:41,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 17:36:41,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 17:36:41,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 17:36:41,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 17:36:41,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 17:36:41,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 17:36:41,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 17:36:41,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 17:36:41,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 17:36:41,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 17:36:41,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 17:36:41,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 17:36:41,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 17:36:41,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 17:36:41,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 17:36:41,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 17:36:41,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 17:36:41,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 17:36:41,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 17:36:41,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 17:36:41,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 17:36:41,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 17:36:41,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 17:36:41,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 17:36:41,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 17:36:41,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 17:36:41,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 17:36:41,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 17:36:41,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 17:36:41,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 17:36:41,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 17:36:41,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 17:36:41,966 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 17:36:41,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 17:36:41,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 17:36:41,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 17:36:41,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 17:36:41,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 17:36:41,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 17:36:41,968 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 17:36:42,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 17:36:42,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 17:36:42,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 17:36:42,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 17:36:42,298 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 17:36:42,299 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-07-08 17:36:42,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afb3570/48149fbad5e04a77b93bd4af02d9c020/FLAG970239114 [2020-07-08 17:36:42,947 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 17:36:42,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c [2020-07-08 17:36:42,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afb3570/48149fbad5e04a77b93bd4af02d9c020/FLAG970239114 [2020-07-08 17:36:43,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afb3570/48149fbad5e04a77b93bd4af02d9c020 [2020-07-08 17:36:43,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 17:36:43,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 17:36:43,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 17:36:43,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 17:36:43,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 17:36:43,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb4b9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43, skipping insertion in model container [2020-07-08 17:36:43,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 17:36:43,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 17:36:43,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:36:43,588 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 17:36:43,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:36:43,634 INFO L208 MainTranslator]: Completed translation [2020-07-08 17:36:43,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43 WrapperNode [2020-07-08 17:36:43,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 17:36:43,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 17:36:43,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 17:36:43,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 17:36:43,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (1/1) ... [2020-07-08 17:36:43,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 17:36:43,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 17:36:43,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 17:36:43,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 17:36:43,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (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 [2020-07-08 17:36:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 17:36:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 17:36:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 17:36:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 17:36:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 17:36:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 17:36:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 17:36:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 17:36:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 17:36:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 17:36:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-08 17:36:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 17:36:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 17:36:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-08 17:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 17:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 17:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 17:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 17:36:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 17:36:44,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 17:36:44,385 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-08 17:36:44,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:36:44 BoogieIcfgContainer [2020-07-08 17:36:44,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 17:36:44,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 17:36:44,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 17:36:44,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 17:36:44,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 05:36:43" (1/3) ... [2020-07-08 17:36:44,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0afd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:36:44, skipping insertion in model container [2020-07-08 17:36:44,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:36:43" (2/3) ... [2020-07-08 17:36:44,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0afd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:36:44, skipping insertion in model container [2020-07-08 17:36:44,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:36:44" (3/3) ... [2020-07-08 17:36:44,403 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-07-08 17:36:44,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 17:36:44,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 17:36:44,465 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 17:36:44,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 17:36:44,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 17:36:44,500 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 17:36:44,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 17:36:44,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 17:36:44,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 17:36:44,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 17:36:44,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 17:36:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-08 17:36:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-08 17:36:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:36:44,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:36:44,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:36:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:36:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-07-08 17:36:44,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:36:44,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262126016] [2020-07-08 17:36:44,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:36:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:44,888 INFO L280 TraceCheckUtils]: 0: Hoare triple {80#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {68#true} is VALID [2020-07-08 17:36:44,889 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-08 17:36:44,890 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-08 17:36:44,890 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} ~N~0 := 0; {68#true} is VALID [2020-07-08 17:36:44,891 INFO L280 TraceCheckUtils]: 4: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-08 17:36:44,892 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {68#true} {68#true} #105#return; {68#true} is VALID [2020-07-08 17:36:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:44,905 INFO L280 TraceCheckUtils]: 0: Hoare triple {68#true} ~cond := #in~cond; {68#true} is VALID [2020-07-08 17:36:44,905 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} assume !(0 == ~cond); {68#true} is VALID [2020-07-08 17:36:44,906 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-08 17:36:44,906 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {68#true} {68#true} #101#return; {68#true} is VALID [2020-07-08 17:36:44,909 INFO L263 TraceCheckUtils]: 0: Hoare triple {68#true} call ULTIMATE.init(); {80#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 17:36:44,910 INFO L280 TraceCheckUtils]: 1: Hoare triple {80#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {68#true} is VALID [2020-07-08 17:36:44,910 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-08 17:36:44,911 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-08 17:36:44,911 INFO L280 TraceCheckUtils]: 4: Hoare triple {68#true} ~N~0 := 0; {68#true} is VALID [2020-07-08 17:36:44,912 INFO L280 TraceCheckUtils]: 5: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-08 17:36:44,912 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {68#true} {68#true} #105#return; {68#true} is VALID [2020-07-08 17:36:44,913 INFO L263 TraceCheckUtils]: 7: Hoare triple {68#true} call #t~ret10 := main(); {68#true} is VALID [2020-07-08 17:36:44,913 INFO L280 TraceCheckUtils]: 8: Hoare triple {68#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {68#true} is VALID [2020-07-08 17:36:44,914 INFO L280 TraceCheckUtils]: 9: Hoare triple {68#true} ~N~0 := #t~nondet0; {68#true} is VALID [2020-07-08 17:36:44,914 INFO L280 TraceCheckUtils]: 10: Hoare triple {68#true} havoc #t~nondet0; {68#true} is VALID [2020-07-08 17:36:44,915 INFO L280 TraceCheckUtils]: 11: Hoare triple {68#true} assume !(~N~0 <= 0); {68#true} is VALID [2020-07-08 17:36:44,915 INFO L263 TraceCheckUtils]: 12: Hoare triple {68#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {68#true} is VALID [2020-07-08 17:36:44,916 INFO L280 TraceCheckUtils]: 13: Hoare triple {68#true} ~cond := #in~cond; {68#true} is VALID [2020-07-08 17:36:44,916 INFO L280 TraceCheckUtils]: 14: Hoare triple {68#true} assume !(0 == ~cond); {68#true} is VALID [2020-07-08 17:36:44,917 INFO L280 TraceCheckUtils]: 15: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-08 17:36:44,917 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {68#true} {68#true} #101#return; {68#true} is VALID [2020-07-08 17:36:44,917 INFO L280 TraceCheckUtils]: 17: Hoare triple {68#true} havoc ~i~0; {68#true} is VALID [2020-07-08 17:36:44,918 INFO L280 TraceCheckUtils]: 18: Hoare triple {68#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {68#true} is VALID [2020-07-08 17:36:44,919 INFO L280 TraceCheckUtils]: 19: Hoare triple {68#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {68#true} is VALID [2020-07-08 17:36:44,919 INFO L280 TraceCheckUtils]: 20: Hoare triple {68#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {68#true} is VALID [2020-07-08 17:36:44,919 INFO L280 TraceCheckUtils]: 21: Hoare triple {68#true} SUMMARY for call write~int(1, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {68#true} is VALID [2020-07-08 17:36:44,920 INFO L280 TraceCheckUtils]: 22: Hoare triple {68#true} ~i~0 := 0; {68#true} is VALID [2020-07-08 17:36:44,922 INFO L280 TraceCheckUtils]: 23: Hoare triple {68#true} assume !true; {69#false} is VALID [2020-07-08 17:36:44,923 INFO L280 TraceCheckUtils]: 24: Hoare triple {69#false} ~i~0 := 0; {69#false} is VALID [2020-07-08 17:36:44,923 INFO L280 TraceCheckUtils]: 25: Hoare triple {69#false} assume !true; {69#false} is VALID [2020-07-08 17:36:44,923 INFO L280 TraceCheckUtils]: 26: Hoare triple {69#false} SUMMARY for call #t~mem9 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L35-6 {69#false} is VALID [2020-07-08 17:36:44,924 INFO L263 TraceCheckUtils]: 27: Hoare triple {69#false} call __VERIFIER_assert((if #t~mem9 == 5 * ~N~0 then 1 else 0)); {69#false} is VALID [2020-07-08 17:36:44,924 INFO L280 TraceCheckUtils]: 28: Hoare triple {69#false} ~cond := #in~cond; {69#false} is VALID [2020-07-08 17:36:44,925 INFO L280 TraceCheckUtils]: 29: Hoare triple {69#false} assume 0 == ~cond; {69#false} is VALID [2020-07-08 17:36:44,925 INFO L280 TraceCheckUtils]: 30: Hoare triple {69#false} assume !false; {69#false} is VALID [2020-07-08 17:36:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:36:44,932 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:36:44,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262126016] [2020-07-08 17:36:44,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:36:44,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-08 17:36:44,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12724619] [2020-07-08 17:36:44,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-08 17:36:44,951 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:36:44,956 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-08 17:36:45,033 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:45,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-08 17:36:45,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:36:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-08 17:36:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 17:36:45,046 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-07-08 17:36:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:45,543 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-07-08 17:36:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-08 17:36:45,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-08 17:36:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:36:45,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 17:36:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2020-07-08 17:36:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 17:36:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2020-07-08 17:36:45,574 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 126 transitions. [2020-07-08 17:36:45,766 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 126 edges. 126 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:45,785 INFO L225 Difference]: With dead ends: 113 [2020-07-08 17:36:45,786 INFO L226 Difference]: Without dead ends: 53 [2020-07-08 17:36:45,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 17:36:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-08 17:36:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-07-08 17:36:45,931 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:36:45,932 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 53 states. [2020-07-08 17:36:45,933 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-08 17:36:45,933 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-08 17:36:45,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:45,947 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-08 17:36:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-08 17:36:45,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:36:45,950 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:36:45,950 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-08 17:36:45,950 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-08 17:36:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:45,960 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-08 17:36:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-08 17:36:45,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:36:45,962 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:36:45,962 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:36:45,963 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:36:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-08 17:36:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-08 17:36:45,987 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-07-08 17:36:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:36:45,997 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-08 17:36:45,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-08 17:36:45,997 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 53 states and 55 transitions. [2020-07-08 17:36:46,102 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-08 17:36:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-08 17:36:46,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:36:46,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:36:46,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 17:36:46,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:36:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:36:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-07-08 17:36:46,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:36:46,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446055440] [2020-07-08 17:36:46,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:36:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:46,324 INFO L280 TraceCheckUtils]: 0: Hoare triple {535#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {521#true} is VALID [2020-07-08 17:36:46,325 INFO L280 TraceCheckUtils]: 1: Hoare triple {521#true} #valid := #valid[0 := 0]; {521#true} is VALID [2020-07-08 17:36:46,325 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} assume 0 < #StackHeapBarrier; {521#true} is VALID [2020-07-08 17:36:46,326 INFO L280 TraceCheckUtils]: 3: Hoare triple {521#true} ~N~0 := 0; {521#true} is VALID [2020-07-08 17:36:46,326 INFO L280 TraceCheckUtils]: 4: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-08 17:36:46,326 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {521#true} {521#true} #105#return; {521#true} is VALID [2020-07-08 17:36:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:36:46,336 INFO L280 TraceCheckUtils]: 0: Hoare triple {521#true} ~cond := #in~cond; {521#true} is VALID [2020-07-08 17:36:46,337 INFO L280 TraceCheckUtils]: 1: Hoare triple {521#true} assume !(0 == ~cond); {521#true} is VALID [2020-07-08 17:36:46,337 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-08 17:36:46,339 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {521#true} {529#(<= 1 ~N~0)} #101#return; {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,341 INFO L263 TraceCheckUtils]: 0: Hoare triple {521#true} call ULTIMATE.init(); {535#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 17:36:46,341 INFO L280 TraceCheckUtils]: 1: Hoare triple {535#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {521#true} is VALID [2020-07-08 17:36:46,341 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} #valid := #valid[0 := 0]; {521#true} is VALID [2020-07-08 17:36:46,342 INFO L280 TraceCheckUtils]: 3: Hoare triple {521#true} assume 0 < #StackHeapBarrier; {521#true} is VALID [2020-07-08 17:36:46,342 INFO L280 TraceCheckUtils]: 4: Hoare triple {521#true} ~N~0 := 0; {521#true} is VALID [2020-07-08 17:36:46,342 INFO L280 TraceCheckUtils]: 5: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-08 17:36:46,343 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {521#true} {521#true} #105#return; {521#true} is VALID [2020-07-08 17:36:46,343 INFO L263 TraceCheckUtils]: 7: Hoare triple {521#true} call #t~ret10 := main(); {521#true} is VALID [2020-07-08 17:36:46,343 INFO L280 TraceCheckUtils]: 8: Hoare triple {521#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {521#true} is VALID [2020-07-08 17:36:46,344 INFO L280 TraceCheckUtils]: 9: Hoare triple {521#true} ~N~0 := #t~nondet0; {521#true} is VALID [2020-07-08 17:36:46,344 INFO L280 TraceCheckUtils]: 10: Hoare triple {521#true} havoc #t~nondet0; {521#true} is VALID [2020-07-08 17:36:46,346 INFO L280 TraceCheckUtils]: 11: Hoare triple {521#true} assume !(~N~0 <= 0); {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,346 INFO L263 TraceCheckUtils]: 12: Hoare triple {529#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {521#true} is VALID [2020-07-08 17:36:46,347 INFO L280 TraceCheckUtils]: 13: Hoare triple {521#true} ~cond := #in~cond; {521#true} is VALID [2020-07-08 17:36:46,347 INFO L280 TraceCheckUtils]: 14: Hoare triple {521#true} assume !(0 == ~cond); {521#true} is VALID [2020-07-08 17:36:46,347 INFO L280 TraceCheckUtils]: 15: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-08 17:36:46,349 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {521#true} {529#(<= 1 ~N~0)} #101#return; {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,350 INFO L280 TraceCheckUtils]: 17: Hoare triple {529#(<= 1 ~N~0)} havoc ~i~0; {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,350 INFO L280 TraceCheckUtils]: 18: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,351 INFO L280 TraceCheckUtils]: 19: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,352 INFO L280 TraceCheckUtils]: 20: Hoare triple {529#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,353 INFO L280 TraceCheckUtils]: 21: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call write~int(1, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {529#(<= 1 ~N~0)} is VALID [2020-07-08 17:36:46,354 INFO L280 TraceCheckUtils]: 22: Hoare triple {529#(<= 1 ~N~0)} ~i~0 := 0; {534#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-08 17:36:46,355 INFO L280 TraceCheckUtils]: 23: Hoare triple {534#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {522#false} is VALID [2020-07-08 17:36:46,356 INFO L280 TraceCheckUtils]: 24: Hoare triple {522#false} ~i~0 := 0; {522#false} is VALID [2020-07-08 17:36:46,356 INFO L280 TraceCheckUtils]: 25: Hoare triple {522#false} assume !(~i~0 < ~N~0); {522#false} is VALID [2020-07-08 17:36:46,356 INFO L280 TraceCheckUtils]: 26: Hoare triple {522#false} SUMMARY for call #t~mem9 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L35-6 {522#false} is VALID [2020-07-08 17:36:46,357 INFO L263 TraceCheckUtils]: 27: Hoare triple {522#false} call __VERIFIER_assert((if #t~mem9 == 5 * ~N~0 then 1 else 0)); {522#false} is VALID [2020-07-08 17:36:46,357 INFO L280 TraceCheckUtils]: 28: Hoare triple {522#false} ~cond := #in~cond; {522#false} is VALID [2020-07-08 17:36:46,357 INFO L280 TraceCheckUtils]: 29: Hoare triple {522#false} assume 0 == ~cond; {522#false} is VALID [2020-07-08 17:36:46,358 INFO L280 TraceCheckUtils]: 30: Hoare triple {522#false} assume !false; {522#false} is VALID [2020-07-08 17:36:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:36:46,360 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:36:46,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446055440] [2020-07-08 17:36:46,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:36:46,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 17:36:46,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561084590] [2020-07-08 17:36:46,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-08 17:36:46,363 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:36:46,364 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 17:36:46,406 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:46,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 17:36:46,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:36:46,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 17:36:46,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-08 17:36:46,408 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-08 17:36:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:47,016 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-07-08 17:36:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 17:36:47,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-08 17:36:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:36:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:36:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2020-07-08 17:36:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:36:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2020-07-08 17:36:47,026 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 105 transitions. [2020-07-08 17:36:47,160 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:47,167 INFO L225 Difference]: With dead ends: 99 [2020-07-08 17:36:47,167 INFO L226 Difference]: Without dead ends: 74 [2020-07-08 17:36:47,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-08 17:36:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-08 17:36:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-07-08 17:36:47,297 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:36:47,297 INFO L82 GeneralOperation]: Start isEquivalent. First operand 74 states. Second operand 55 states. [2020-07-08 17:36:47,297 INFO L74 IsIncluded]: Start isIncluded. First operand 74 states. Second operand 55 states. [2020-07-08 17:36:47,298 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 55 states. [2020-07-08 17:36:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:47,309 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-07-08 17:36:47,309 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-08 17:36:47,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:36:47,310 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:36:47,310 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand 74 states. [2020-07-08 17:36:47,310 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 74 states. [2020-07-08 17:36:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:36:47,318 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-07-08 17:36:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-08 17:36:47,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:36:47,321 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:36:47,322 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:36:47,322 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:36:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-08 17:36:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-08 17:36:47,328 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-07-08 17:36:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:36:47,329 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-08 17:36:47,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 17:36:47,330 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 55 states and 57 transitions. [2020-07-08 17:36:47,428 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:36:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-08 17:36:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-08 17:36:47,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:36:47,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:36:47,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 17:36:47,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:36:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:36:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-07-08 17:36:47,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:36:47,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122649788] [2020-07-08 17:36:47,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:36:47,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 17:36:47,481 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 17:36:47,488 INFO L168 Benchmark]: Toolchain (without parser) took 4176.35 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 102.0 MB in the beginning and 138.3 MB in the end (delta: -36.3 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:36:47,489 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 17:36:47,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.86 ms. Allocated memory is still 144.2 MB. Free memory was 102.0 MB in the beginning and 90.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:36:47,491 INFO L168 Benchmark]: Boogie Preprocessor took 188.32 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 90.5 MB in the beginning and 179.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-08 17:36:47,492 INFO L168 Benchmark]: RCFGBuilder took 566.43 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 151.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-07-08 17:36:47,493 INFO L168 Benchmark]: TraceAbstraction took 3092.26 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 150.3 MB in the beginning and 138.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-07-08 17:36:47,497 INFO L336 ainManager$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 0.27 ms. Allocated memory is still 144.2 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.86 ms. Allocated memory is still 144.2 MB. Free memory was 102.0 MB in the beginning and 90.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.32 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 90.5 MB in the beginning and 179.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.43 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 151.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3092.26 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 150.3 MB in the beginning and 138.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...