/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/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:45,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:45,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:45,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:45,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:45,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:45,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:45,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:45,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:45,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:45,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:45,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:45,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:45,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:45,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:45,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:45,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:45,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:45,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:45,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:45,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:45,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:45,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:45,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:45,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:45,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:45,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:45,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:45,360 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 00:47:45,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:45,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:45,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:45,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:45,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:45,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:45,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:45,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:45,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:45,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:45,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:45,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:45,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:45,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:45,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:45,381 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:45,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:45,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:45,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:45,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:45,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:45,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:45,383 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:45,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:45,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:45,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:45,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:45,677 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:45,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-18 00:47:45,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191b79575/f874db59e9b8497cbba2d730e6373a4e/FLAG73c894712 [2020-07-18 00:47:46,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:46,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-18 00:47:46,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191b79575/f874db59e9b8497cbba2d730e6373a4e/FLAG73c894712 [2020-07-18 00:47:46,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191b79575/f874db59e9b8497cbba2d730e6373a4e [2020-07-18 00:47:46,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:46,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:46,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:46,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:46,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:46,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:46,585 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 12:47:46, skipping insertion in model container [2020-07-18 00:47:46,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:46,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:46,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:46,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:46,830 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:46,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:46,872 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:46,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46 WrapperNode [2020-07-18 00:47:46,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:46,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:46,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:46,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:46,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:46,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:46,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:46,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:47,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:47,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:47,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (1/1) ... [2020-07-18 00:47:47,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:47,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:47,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:47,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:47,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (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 00:47:47,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:47,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:47,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:47,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:47,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:47:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:47,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:47,598 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-18 00:47:47,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:47 BoogieIcfgContainer [2020-07-18 00:47:47,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:47,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:47,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:47,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:47,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:46" (1/3) ... [2020-07-18 00:47:47,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1180a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:47, skipping insertion in model container [2020-07-18 00:47:47,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:46" (2/3) ... [2020-07-18 00:47:47,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1180a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:47, skipping insertion in model container [2020-07-18 00:47:47,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:47" (3/3) ... [2020-07-18 00:47:47,611 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-07-18 00:47:47,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:47,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:47,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:47,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:47,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:47,666 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:47,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:47,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:47,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:47,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:47,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-07-18 00:47:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-18 00:47:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:47,697 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] [2020-07-18 00:47:47,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:47,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1254588623, now seen corresponding path program 1 times [2020-07-18 00:47:47,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:47,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591359483] [2020-07-18 00:47:47,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:47,965 INFO L280 TraceCheckUtils]: 0: Hoare triple {92#(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; {80#true} is VALID [2020-07-18 00:47:47,966 INFO L280 TraceCheckUtils]: 1: Hoare triple {80#true} #valid := #valid[0 := 0]; {80#true} is VALID [2020-07-18 00:47:47,967 INFO L280 TraceCheckUtils]: 2: Hoare triple {80#true} assume 0 < #StackHeapBarrier; {80#true} is VALID [2020-07-18 00:47:47,967 INFO L280 TraceCheckUtils]: 3: Hoare triple {80#true} ~N~0 := 0; {80#true} is VALID [2020-07-18 00:47:47,968 INFO L280 TraceCheckUtils]: 4: Hoare triple {80#true} assume true; {80#true} is VALID [2020-07-18 00:47:47,968 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {80#true} {80#true} #135#return; {80#true} is VALID [2020-07-18 00:47:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:47,979 INFO L280 TraceCheckUtils]: 0: Hoare triple {80#true} ~cond := #in~cond; {80#true} is VALID [2020-07-18 00:47:47,979 INFO L280 TraceCheckUtils]: 1: Hoare triple {80#true} assume !(0 == ~cond); {80#true} is VALID [2020-07-18 00:47:47,980 INFO L280 TraceCheckUtils]: 2: Hoare triple {80#true} assume true; {80#true} is VALID [2020-07-18 00:47:47,980 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {80#true} {80#true} #131#return; {80#true} is VALID [2020-07-18 00:47:47,982 INFO L263 TraceCheckUtils]: 0: Hoare triple {80#true} call ULTIMATE.init(); {92#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:47,983 INFO L280 TraceCheckUtils]: 1: Hoare triple {92#(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; {80#true} is VALID [2020-07-18 00:47:47,983 INFO L280 TraceCheckUtils]: 2: Hoare triple {80#true} #valid := #valid[0 := 0]; {80#true} is VALID [2020-07-18 00:47:47,984 INFO L280 TraceCheckUtils]: 3: Hoare triple {80#true} assume 0 < #StackHeapBarrier; {80#true} is VALID [2020-07-18 00:47:47,984 INFO L280 TraceCheckUtils]: 4: Hoare triple {80#true} ~N~0 := 0; {80#true} is VALID [2020-07-18 00:47:47,985 INFO L280 TraceCheckUtils]: 5: Hoare triple {80#true} assume true; {80#true} is VALID [2020-07-18 00:47:47,985 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {80#true} {80#true} #135#return; {80#true} is VALID [2020-07-18 00:47:47,985 INFO L263 TraceCheckUtils]: 7: Hoare triple {80#true} call #t~ret13 := main(); {80#true} is VALID [2020-07-18 00:47:47,986 INFO L280 TraceCheckUtils]: 8: Hoare triple {80#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {80#true} is VALID [2020-07-18 00:47:47,986 INFO L280 TraceCheckUtils]: 9: Hoare triple {80#true} ~N~0 := #t~nondet0; {80#true} is VALID [2020-07-18 00:47:47,987 INFO L280 TraceCheckUtils]: 10: Hoare triple {80#true} havoc #t~nondet0; {80#true} is VALID [2020-07-18 00:47:47,987 INFO L280 TraceCheckUtils]: 11: Hoare triple {80#true} assume !(~N~0 <= 0); {80#true} is VALID [2020-07-18 00:47:47,988 INFO L263 TraceCheckUtils]: 12: Hoare triple {80#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {80#true} is VALID [2020-07-18 00:47:47,988 INFO L280 TraceCheckUtils]: 13: Hoare triple {80#true} ~cond := #in~cond; {80#true} is VALID [2020-07-18 00:47:47,988 INFO L280 TraceCheckUtils]: 14: Hoare triple {80#true} assume !(0 == ~cond); {80#true} is VALID [2020-07-18 00:47:47,989 INFO L280 TraceCheckUtils]: 15: Hoare triple {80#true} assume true; {80#true} is VALID [2020-07-18 00:47:47,989 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {80#true} {80#true} #131#return; {80#true} is VALID [2020-07-18 00:47:47,990 INFO L280 TraceCheckUtils]: 17: Hoare triple {80#true} havoc ~i~0; {80#true} is VALID [2020-07-18 00:47:47,990 INFO L280 TraceCheckUtils]: 18: Hoare triple {80#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {80#true} is VALID [2020-07-18 00:47:47,991 INFO L280 TraceCheckUtils]: 19: Hoare triple {80#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26-1 {80#true} is VALID [2020-07-18 00:47:47,991 INFO L280 TraceCheckUtils]: 20: Hoare triple {80#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {80#true} is VALID [2020-07-18 00:47:47,991 INFO L280 TraceCheckUtils]: 21: Hoare triple {80#true} SUMMARY for call write~int(0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {80#true} is VALID [2020-07-18 00:47:47,992 INFO L280 TraceCheckUtils]: 22: Hoare triple {80#true} ~i~0 := 0; {80#true} is VALID [2020-07-18 00:47:47,993 INFO L280 TraceCheckUtils]: 23: Hoare triple {80#true} assume !true; {81#false} is VALID [2020-07-18 00:47:47,994 INFO L280 TraceCheckUtils]: 24: Hoare triple {81#false} ~i~0 := 0; {81#false} is VALID [2020-07-18 00:47:47,994 INFO L280 TraceCheckUtils]: 25: Hoare triple {81#false} assume !true; {81#false} is VALID [2020-07-18 00:47:47,994 INFO L280 TraceCheckUtils]: 26: Hoare triple {81#false} ~i~0 := 0; {81#false} is VALID [2020-07-18 00:47:47,995 INFO L280 TraceCheckUtils]: 27: Hoare triple {81#false} assume !true; {81#false} is VALID [2020-07-18 00:47:47,995 INFO L280 TraceCheckUtils]: 28: Hoare triple {81#false} SUMMARY for call write~int(~N~0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L40-6 {81#false} is VALID [2020-07-18 00:47:47,996 INFO L280 TraceCheckUtils]: 29: Hoare triple {81#false} ~i~0 := 0; {81#false} is VALID [2020-07-18 00:47:47,996 INFO L280 TraceCheckUtils]: 30: Hoare triple {81#false} assume !true; {81#false} is VALID [2020-07-18 00:47:47,997 INFO L280 TraceCheckUtils]: 31: Hoare triple {81#false} SUMMARY for call #t~mem12 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L46-6 {81#false} is VALID [2020-07-18 00:47:47,997 INFO L263 TraceCheckUtils]: 32: Hoare triple {81#false} call __VERIFIER_assert((if #t~mem12 == ~N~0 * (1 + ~N~0) then 1 else 0)); {81#false} is VALID [2020-07-18 00:47:47,997 INFO L280 TraceCheckUtils]: 33: Hoare triple {81#false} ~cond := #in~cond; {81#false} is VALID [2020-07-18 00:47:47,998 INFO L280 TraceCheckUtils]: 34: Hoare triple {81#false} assume 0 == ~cond; {81#false} is VALID [2020-07-18 00:47:47,998 INFO L280 TraceCheckUtils]: 35: Hoare triple {81#false} assume !false; {81#false} is VALID [2020-07-18 00:47:48,004 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 00:47:48,006 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:48,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591359483] [2020-07-18 00:47:48,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:48,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:48,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762487989] [2020-07-18 00:47:48,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-18 00:47:48,022 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:48,026 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:48,104 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:48,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:48,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:48,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:48,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:48,118 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-07-18 00:47:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:48,575 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2020-07-18 00:47:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:48,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-18 00:47:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2020-07-18 00:47:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2020-07-18 00:47:48,596 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 156 transitions. [2020-07-18 00:47:48,818 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 156 edges. 156 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:48,843 INFO L225 Difference]: With dead ends: 137 [2020-07-18 00:47:48,845 INFO L226 Difference]: Without dead ends: 65 [2020-07-18 00:47:48,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-18 00:47:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-18 00:47:48,984 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:48,985 INFO L82 GeneralOperation]: Start isEquivalent. First operand 65 states. Second operand 65 states. [2020-07-18 00:47:48,985 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand 65 states. [2020-07-18 00:47:48,986 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 65 states. [2020-07-18 00:47:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:48,995 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-18 00:47:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-07-18 00:47:48,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:48,997 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:48,997 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand 65 states. [2020-07-18 00:47:48,997 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 65 states. [2020-07-18 00:47:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:49,018 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-18 00:47:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-07-18 00:47:49,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:49,021 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:49,021 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:49,022 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-18 00:47:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-07-18 00:47:49,040 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 36 [2020-07-18 00:47:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:49,040 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-07-18 00:47:49,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:49,041 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 65 states and 68 transitions. [2020-07-18 00:47:49,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-07-18 00:47:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-18 00:47:49,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:49,143 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] [2020-07-18 00:47:49,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:49,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash 626494907, now seen corresponding path program 1 times [2020-07-18 00:47:49,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:49,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201556180] [2020-07-18 00:47:49,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:49,325 INFO L280 TraceCheckUtils]: 0: Hoare triple {643#(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; {629#true} is VALID [2020-07-18 00:47:49,326 INFO L280 TraceCheckUtils]: 1: Hoare triple {629#true} #valid := #valid[0 := 0]; {629#true} is VALID [2020-07-18 00:47:49,326 INFO L280 TraceCheckUtils]: 2: Hoare triple {629#true} assume 0 < #StackHeapBarrier; {629#true} is VALID [2020-07-18 00:47:49,327 INFO L280 TraceCheckUtils]: 3: Hoare triple {629#true} ~N~0 := 0; {629#true} is VALID [2020-07-18 00:47:49,327 INFO L280 TraceCheckUtils]: 4: Hoare triple {629#true} assume true; {629#true} is VALID [2020-07-18 00:47:49,328 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {629#true} {629#true} #135#return; {629#true} is VALID [2020-07-18 00:47:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:49,336 INFO L280 TraceCheckUtils]: 0: Hoare triple {629#true} ~cond := #in~cond; {629#true} is VALID [2020-07-18 00:47:49,337 INFO L280 TraceCheckUtils]: 1: Hoare triple {629#true} assume !(0 == ~cond); {629#true} is VALID [2020-07-18 00:47:49,337 INFO L280 TraceCheckUtils]: 2: Hoare triple {629#true} assume true; {629#true} is VALID [2020-07-18 00:47:49,339 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {629#true} {637#(<= 1 ~N~0)} #131#return; {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,340 INFO L263 TraceCheckUtils]: 0: Hoare triple {629#true} call ULTIMATE.init(); {643#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:49,340 INFO L280 TraceCheckUtils]: 1: Hoare triple {643#(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; {629#true} is VALID [2020-07-18 00:47:49,341 INFO L280 TraceCheckUtils]: 2: Hoare triple {629#true} #valid := #valid[0 := 0]; {629#true} is VALID [2020-07-18 00:47:49,341 INFO L280 TraceCheckUtils]: 3: Hoare triple {629#true} assume 0 < #StackHeapBarrier; {629#true} is VALID [2020-07-18 00:47:49,341 INFO L280 TraceCheckUtils]: 4: Hoare triple {629#true} ~N~0 := 0; {629#true} is VALID [2020-07-18 00:47:49,342 INFO L280 TraceCheckUtils]: 5: Hoare triple {629#true} assume true; {629#true} is VALID [2020-07-18 00:47:49,342 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {629#true} {629#true} #135#return; {629#true} is VALID [2020-07-18 00:47:49,343 INFO L263 TraceCheckUtils]: 7: Hoare triple {629#true} call #t~ret13 := main(); {629#true} is VALID [2020-07-18 00:47:49,343 INFO L280 TraceCheckUtils]: 8: Hoare triple {629#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {629#true} is VALID [2020-07-18 00:47:49,343 INFO L280 TraceCheckUtils]: 9: Hoare triple {629#true} ~N~0 := #t~nondet0; {629#true} is VALID [2020-07-18 00:47:49,344 INFO L280 TraceCheckUtils]: 10: Hoare triple {629#true} havoc #t~nondet0; {629#true} is VALID [2020-07-18 00:47:49,345 INFO L280 TraceCheckUtils]: 11: Hoare triple {629#true} assume !(~N~0 <= 0); {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,345 INFO L263 TraceCheckUtils]: 12: Hoare triple {637#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {629#true} is VALID [2020-07-18 00:47:49,346 INFO L280 TraceCheckUtils]: 13: Hoare triple {629#true} ~cond := #in~cond; {629#true} is VALID [2020-07-18 00:47:49,346 INFO L280 TraceCheckUtils]: 14: Hoare triple {629#true} assume !(0 == ~cond); {629#true} is VALID [2020-07-18 00:47:49,347 INFO L280 TraceCheckUtils]: 15: Hoare triple {629#true} assume true; {629#true} is VALID [2020-07-18 00:47:49,348 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {629#true} {637#(<= 1 ~N~0)} #131#return; {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,349 INFO L280 TraceCheckUtils]: 17: Hoare triple {637#(<= 1 ~N~0)} havoc ~i~0; {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,350 INFO L280 TraceCheckUtils]: 18: Hoare triple {637#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,351 INFO L280 TraceCheckUtils]: 19: Hoare triple {637#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26-1 {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,351 INFO L280 TraceCheckUtils]: 20: Hoare triple {637#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,352 INFO L280 TraceCheckUtils]: 21: Hoare triple {637#(<= 1 ~N~0)} SUMMARY for call write~int(0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {637#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:49,353 INFO L280 TraceCheckUtils]: 22: Hoare triple {637#(<= 1 ~N~0)} ~i~0 := 0; {642#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:49,355 INFO L280 TraceCheckUtils]: 23: Hoare triple {642#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {630#false} is VALID [2020-07-18 00:47:49,355 INFO L280 TraceCheckUtils]: 24: Hoare triple {630#false} ~i~0 := 0; {630#false} is VALID [2020-07-18 00:47:49,355 INFO L280 TraceCheckUtils]: 25: Hoare triple {630#false} assume !(~i~0 < ~N~0); {630#false} is VALID [2020-07-18 00:47:49,356 INFO L280 TraceCheckUtils]: 26: Hoare triple {630#false} ~i~0 := 0; {630#false} is VALID [2020-07-18 00:47:49,356 INFO L280 TraceCheckUtils]: 27: Hoare triple {630#false} assume !(~i~0 < ~N~0); {630#false} is VALID [2020-07-18 00:47:49,356 INFO L280 TraceCheckUtils]: 28: Hoare triple {630#false} SUMMARY for call write~int(~N~0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L40-6 {630#false} is VALID [2020-07-18 00:47:49,357 INFO L280 TraceCheckUtils]: 29: Hoare triple {630#false} ~i~0 := 0; {630#false} is VALID [2020-07-18 00:47:49,357 INFO L280 TraceCheckUtils]: 30: Hoare triple {630#false} assume !(~i~0 < ~N~0); {630#false} is VALID [2020-07-18 00:47:49,357 INFO L280 TraceCheckUtils]: 31: Hoare triple {630#false} SUMMARY for call #t~mem12 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L46-6 {630#false} is VALID [2020-07-18 00:47:49,358 INFO L263 TraceCheckUtils]: 32: Hoare triple {630#false} call __VERIFIER_assert((if #t~mem12 == ~N~0 * (1 + ~N~0) then 1 else 0)); {630#false} is VALID [2020-07-18 00:47:49,358 INFO L280 TraceCheckUtils]: 33: Hoare triple {630#false} ~cond := #in~cond; {630#false} is VALID [2020-07-18 00:47:49,359 INFO L280 TraceCheckUtils]: 34: Hoare triple {630#false} assume 0 == ~cond; {630#false} is VALID [2020-07-18 00:47:49,359 INFO L280 TraceCheckUtils]: 35: Hoare triple {630#false} assume !false; {630#false} is VALID [2020-07-18 00:47:49,362 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 00:47:49,368 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:49,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201556180] [2020-07-18 00:47:49,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:49,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:49,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62365787] [2020-07-18 00:47:49,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-07-18 00:47:49,371 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:49,371 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:49,417 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:49,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:49,418 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 5 states. [2020-07-18 00:47:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:50,083 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2020-07-18 00:47:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:50,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-07-18 00:47:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2020-07-18 00:47:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2020-07-18 00:47:50,093 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 139 transitions. [2020-07-18 00:47:50,258 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 139 edges. 139 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:50,262 INFO L225 Difference]: With dead ends: 130 [2020-07-18 00:47:50,263 INFO L226 Difference]: Without dead ends: 93 [2020-07-18 00:47:50,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-18 00:47:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-07-18 00:47:50,376 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:50,376 INFO L82 GeneralOperation]: Start isEquivalent. First operand 93 states. Second operand 69 states. [2020-07-18 00:47:50,376 INFO L74 IsIncluded]: Start isIncluded. First operand 93 states. Second operand 69 states. [2020-07-18 00:47:50,376 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 69 states. [2020-07-18 00:47:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:50,382 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-07-18 00:47:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-07-18 00:47:50,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:50,383 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:50,383 INFO L74 IsIncluded]: Start isIncluded. First operand 69 states. Second operand 93 states. [2020-07-18 00:47:50,384 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 93 states. [2020-07-18 00:47:50,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:50,389 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-07-18 00:47:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-07-18 00:47:50,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:50,391 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:50,391 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:50,391 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-18 00:47:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-07-18 00:47:50,395 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 36 [2020-07-18 00:47:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:50,395 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-07-18 00:47:50,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:50,396 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 69 states and 72 transitions. [2020-07-18 00:47:50,487 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 00:47:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-07-18 00:47:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-18 00:47:50,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:50,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:50,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:50,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:50,492 INFO L82 PathProgramCache]: Analyzing trace with hash 290043744, now seen corresponding path program 1 times [2020-07-18 00:47:50,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:50,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372180882] [2020-07-18 00:47:50,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:50,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:50,528 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:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:47:50,534 INFO L168 Benchmark]: Toolchain (without parser) took 3959.87 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 101.8 MB in the beginning and 206.7 MB in the end (delta: -104.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 00:47:50,535 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:50,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.30 ms. Allocated memory is still 144.7 MB. Free memory was 101.3 MB in the beginning and 90.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:50,537 INFO L168 Benchmark]: Boogie Preprocessor took 147.11 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.0 MB in the beginning and 179.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:50,538 INFO L168 Benchmark]: RCFGBuilder took 578.58 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 146.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:50,538 INFO L168 Benchmark]: TraceAbstraction took 2927.55 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 146.4 MB in the beginning and 206.7 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 00:47:50,542 INFO L336 ainManager$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 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.30 ms. Allocated memory is still 144.7 MB. Free memory was 101.3 MB in the beginning and 90.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.11 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.0 MB in the beginning and 179.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 578.58 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 146.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2927.55 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 146.4 MB in the beginning and 206.7 MB in the end (delta: -60.2 MB). There was no memory consumed. 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:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...